56664351 has 6 divisors (see below), whose sum is σ = 81848520. Its totient is φ = 37776228.

The previous prime is 56664331. The next prime is 56664359. The reversal of 56664351 is 15346665.

It is not a de Polignac number, because 56664351 - 2¹⁴ = 56647967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56664359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3148011 + ... + 3148028.

It is an arithmetic number, because the mean of its divisors is an integer number (13641420).

Almost surely, 2^56664351 is an apocalyptic number.

56664351 is a deficient number, since it is larger than the sum of its proper divisors (25184169).

56664351 is a wasteful number, since it uses less digits than its factorization.

56664351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296045 (or 6296042 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 56664351 is about 7527.5727163542. The cubic root of 56664351 is about 384.0932187424.

The spelling of 56664351 in words is "fifty-six million, six hundred sixty-four thousand, three hundred fifty-one".