56660567 has 2 divisors, whose sum is σ = 56660568. Its totient is φ = 56660566.

The previous prime is 56660561. The next prime is 56660581. The reversal of 56660567 is 76506665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56660567 - 2¹² = 56656471 is a prime.

It is a super-2 number, since 2×56660567² = 6420839705522978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56660561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28330283 + 28330284.

It is an arithmetic number, because the mean of its divisors is an integer number (28330284).

Almost surely, 2^56660567 is an apocalyptic number.

56660567 is a deficient number, since it is larger than the sum of its proper divisors (1).

56660567 is an equidigital number, since it uses as much as digits as its factorization.

56660567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 56660567 is about 7527.3213695178. The cubic root of 56660567 is about 384.0846687395.

The spelling of 56660567 in words is "fifty-six million, six hundred sixty thousand, five hundred sixty-seven".