66572132 has 24 divisors (see below), whose sum is σ = 127666560. Its totient is φ = 30123360.

The previous prime is 66572123. The next prime is 66572137. The reversal of 66572132 is 23127566.

It is not an unprimeable number, because it can be changed into a prime (66572137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6773 + ... + 13379.

It is an arithmetic number, because the mean of its divisors is an integer number (5319440).

Almost surely, 2^66572132 is an apocalyptic number.

It is an amenable number.

66572132 is a deficient number, since it is larger than the sum of its proper divisors (61094428).

66572132 is a wasteful number, since it uses less digits than its factorization.

66572132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6851 (or 6849 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 66572132 is about 8159.1747131680. The cubic root of 66572132 is about 405.2883827283.

Adding to 66572132 its reverse (23127566), we get a palindrome (89699698).

The spelling of 66572132 in words is "sixty-six million, five hundred seventy-two thousand, one hundred thirty-two".