56591667 has 12 divisors (see below), whose sum is σ = 89174904. Its totient is φ = 34297920.

The previous prime is 56591627. The next prime is 56591669. The reversal of 56591667 is 76619565.

56591667 is a `hidden beast` number, since 56 + 591 + 6 + 6 + 7 = 666.

It is not a de Polignac number, because 56591667 - 2¹² = 56587571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56591669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285718 + ... + 285915.

It is an arithmetic number, because the mean of its divisors is an integer number (7431242).

Almost surely, 2^56591667 is an apocalyptic number.

56591667 is a deficient number, since it is larger than the sum of its proper divisors (32583237).

56591667 is a wasteful number, since it uses less digits than its factorization.

56591667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571650 (or 571647 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 56591667 is about 7522.7433161048. The cubic root of 56591667 is about 383.9289215773.

The spelling of 56591667 in words is "fifty-six million, five hundred ninety-one thousand, six hundred sixty-seven".