66456256 has 28 divisors (see below), whose sum is σ = 132633720. Its totient is φ = 33036800.

The previous prime is 66456253. The next prime is 66456263. The reversal of 66456256 is 65265466.

It is not an unprimeable number, because it can be changed into a prime (66456253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8556 + ... + 14356.

Almost surely, 2^66456256 is an apocalyptic number.

It is an amenable number.

66456256 is a deficient number, since it is larger than the sum of its proper divisors (66177464).

66456256 is a wasteful number, since it uses less digits than its factorization.

66456256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992 (or 5982 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 66456256 is about 8152.0706572012. The cubic root of 66456256 is about 405.0530967321.

The spelling of 66456256 in words is "sixty-six million, four hundred fifty-six thousand, two hundred fifty-six".