56667655 has 16 divisors (see below), whose sum is σ = 74390400. Its totient is φ = 41097760.

The previous prime is 56667629. The next prime is 56667713. The reversal of 56667655 is 55676665.

It is not a de Polignac number, because 56667655 - 2⁵ = 56667623 is a prime.

It is a super-2 number, since 2×56667655² = 6422446246398050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21816 + ... + 24274.

It is an arithmetic number, because the mean of its divisors is an integer number (4649400).

Almost surely, 2^56667655 is an apocalyptic number.

56667655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56667655 is a deficient number, since it is larger than the sum of its proper divisors (17722745).

56667655 is a wasteful number, since it uses less digits than its factorization.

56667655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894.

The product of its digits is 1134000, while the sum is 46.

The square root of 56667655 is about 7527.7921730080. The cubic root of 56667655 is about 384.1006838670.

The spelling of 56667655 in words is "fifty-six million, six hundred sixty-seven thousand, six hundred fifty-five".