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5686661 = 21126951
BaseRepresentation
bin10101101100010110000101
3101200220122002
4111230112011
52423433121
6321515045
766223121
oct25542605
911626562
105686661
113234522
121aa2a85
1312414b6
14a80581
15774e0b
hex56c585

5686661 has 4 divisors (see below), whose sum is σ = 5713824. Its totient is φ = 5659500.

The previous prime is 5686649. The next prime is 5686669. The reversal of 5686661 is 1666865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5686661 - 222 = 1492357 is a prime.

It is a super-2 number, since 2×56866612 = 64676226657842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5686669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13265 + ... + 13686.

It is an arithmetic number, because the mean of its divisors is an integer number (1428456).

Almost surely, 25686661 is an apocalyptic number.

It is an amenable number.

5686661 is a deficient number, since it is larger than the sum of its proper divisors (27163).

5686661 is a wasteful number, since it uses less digits than its factorization.

5686661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27162.

The product of its digits is 51840, while the sum is 38.

The square root of 5686661 is about 2384.6720948592. The cubic root of 5686661 is about 178.4921468402.

The spelling of 5686661 in words is "five million, six hundred eighty-six thousand, six hundred sixty-one".

Divisors: 1 211 26951 5686661