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93686669 = 5312371429
BaseRepresentation
bin1011001010110…
…00101110001101
320112021202221122
411211120232031
5142440433134
613144010325
72215215656
oct545305615
9215252848
1093686669
114897a1aa
12274609a5
1316542ccb
14c62a52d
15835902e
hex5958b8d

93686669 has 8 divisors (see below), whose sum is σ = 95598360. Its totient is φ = 91780416.

The previous prime is 93686657. The next prime is 93686683. The reversal of 93686669 is 96668639.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12866569 + 80820100 = 3587^2 + 8990^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-93686669 is a prime.

It is a super-2 number, since 2×936866692 = 17554383896631122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 93686669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93686069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64847 + ... + 66275.

It is an arithmetic number, because the mean of its divisors is an integer number (11949795).

Almost surely, 293686669 is an apocalyptic number.

It is an amenable number.

93686669 is a deficient number, since it is larger than the sum of its proper divisors (1911691).

93686669 is a wasteful number, since it uses less digits than its factorization.

93686669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719.

The product of its digits is 2519424, while the sum is 53.

The square root of 93686669 is about 9679.1874142409. The cubic root of 93686669 is about 454.1778317748.

The spelling of 93686669 in words is "ninety-three million, six hundred eighty-six thousand, six hundred sixty-nine".

Divisors: 1 53 1237 1429 65561 75737 1767673 93686669