66455372 has 12 divisors (see below), whose sum is σ = 121353456. Its totient is φ = 31782960.

The previous prime is 66455371. The next prime is 66455387. The reversal of 66455372 is 27355466.

66455372 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

66455372 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (66455371) 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, 361079 + ... + 361262.

It is an arithmetic number, because the mean of its divisors is an integer number (10112788).

Almost surely, 2^66455372 is an apocalyptic number.

It is an amenable number.

66455372 is a deficient number, since it is larger than the sum of its proper divisors (54898084).

66455372 is a wasteful number, since it uses less digits than its factorization.

66455372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722368 (or 722366 counting only the distinct ones).

The product of its digits is 151200, while the sum is 38.

The square root of 66455372 is about 8152.0164376674. The cubic root of 66455372 is about 405.0513007210.

The spelling of 66455372 in words is "sixty-six million, four hundred fifty-five thousand, three hundred seventy-two".