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87196653 = 329688517
BaseRepresentation
bin1010011001010…
…00001111101101
320002002001022200
411030220033231
5134310243103
612352532113
72106105435
oct514501755
9202061280
1087196653
1145247155
1225251039
13150acc6b
14b81b2c5
1579c60a3
hex53283ed

87196653 has 6 divisors (see below), whose sum is σ = 125950734. Its totient is φ = 58131096.

The previous prime is 87196651. The next prime is 87196661. The reversal of 87196653 is 35669178.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48483369 + 38713284 = 6963^2 + 6222^2 .

It is not a de Polignac number, because 87196653 - 21 = 87196651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87196599 and 87196608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87196651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4844250 + ... + 4844267.

It is an arithmetic number, because the mean of its divisors is an integer number (20991789).

Almost surely, 287196653 is an apocalyptic number.

It is an amenable number.

87196653 is a deficient number, since it is larger than the sum of its proper divisors (38754081).

87196653 is a wasteful number, since it uses less digits than its factorization.

87196653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9688523 (or 9688520 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 87196653 is about 9337.9148100633. The cubic root of 87196653 is about 443.4383725457.

The spelling of 87196653 in words is "eighty-seven million, one hundred ninety-six thousand, six hundred fifty-three".

Divisors: 1 3 9 9688517 29065551 87196653