56667567 has 12 divisors (see below), whose sum is σ = 83050520. Its totient is φ = 34343760.

The previous prime is 56667551. The next prime is 56667577. The reversal of 56667567 is 76576665.

It is not a de Polignac number, because 56667567 - 2⁴ = 56667551 is a prime.

It is a super-4 number, since 4×56667567⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56667577) 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, 77692 + ... + 78417.

Almost surely, 2^56667567 is an apocalyptic number.

56667567 is a deficient number, since it is larger than the sum of its proper divisors (26382953).

56667567 is a wasteful number, since it uses less digits than its factorization.

56667567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156134 (or 156123 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 48.

The square root of 56667567 is about 7527.7863279984. The cubic root of 56667567 is about 384.1004850418.

The spelling of 56667567 in words is "fifty-six million, six hundred sixty-seven thousand, five hundred sixty-seven".