66772032 has 28 divisors (see below), whose sum is σ = 176668176. Its totient is φ = 22257280.

The previous prime is 66772001. The next prime is 66772033. The reversal of 66772032 is 23027766.

It is a junction number, because it is equal to n+sod(n) for n = 66771984 and 66772002.

It is not an unprimeable number, because it can be changed into a prime (66772033) 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, 173694 + ... + 174077.

Almost surely, 2^66772032 is an apocalyptic number.

It is an amenable number.

66772032 is an abundant number, since it is smaller than the sum of its proper divisors (109896144).

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

66772032 is a wasteful number, since it uses less digits than its factorization.

66772032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347786 (or 347776 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 66772032 is about 8171.4155444452. The cubic root of 66772032 is about 405.6936383443.

Adding to 66772032 its reverse (23027766), we get a palindrome (89799798).

The spelling of 66772032 in words is "sixty-six million, seven hundred seventy-two thousand, thirty-two".