66488572 has 12 divisors (see below), whose sum is σ = 116452336. Its totient is φ = 33216480.

The previous prime is 66488567. The next prime is 66488573. The reversal of 66488572 is 27588466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66488573) 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, 1008 + ... + 11575.

Almost surely, 2^66488572 is an apocalyptic number.

It is an amenable number.

66488572 is a deficient number, since it is larger than the sum of its proper divisors (49963764).

66488572 is a wasteful number, since it uses less digits than its factorization.

66488572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13908 (or 13906 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 66488572 is about 8154.0524894067. The cubic root of 66488572 is about 405.1187417920.

The spelling of 66488572 in words is "sixty-six million, four hundred eighty-eight thousand, five hundred seventy-two".