56666466 has 20 divisors (see below), whose sum is σ = 126975222. Its totient is φ = 18888768.

The previous prime is 56666429. The next prime is 56666473. The reversal of 56666466 is 66466665.

It can be written as a sum of positive squares in only one way, i.e., 55935441 + 731025 = 7479^2 + 855^2 .

It is a super-2 number, since 2×56666466² = 6422176737858312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 174735 + ... + 175058.

Almost surely, 2^56666466 is an apocalyptic number.

56666466 is an abundant number, since it is smaller than the sum of its proper divisors (70308756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56666466 is a wasteful number, since it uses less digits than its factorization.

56666466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349807 (or 349798 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 56666466 is about 7527.7131985750. The cubic root of 56666466 is about 384.0979974497.

The spelling of 56666466 in words is "fifty-six million, six hundred sixty-six thousand, four hundred sixty-six".