66125604 has 48 divisors (see below), whose sum is σ = 160473600. Its totient is φ = 21169920.

The previous prime is 66125603. The next prime is 66125639. The reversal of 66125604 is 40652166.

It is not an unprimeable number, because it can be changed into a prime (66125603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54832 + ... + 56024.

It is an arithmetic number, because the mean of its divisors is an integer number (3343200).

Almost surely, 2^66125604 is an apocalyptic number.

It is an amenable number.

66125604 is an abundant number, since it is smaller than the sum of its proper divisors (94347996).

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

66125604 is a wasteful number, since it uses less digits than its factorization.

66125604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 66125604 is about 8131.7651220384. The cubic root of 66125604 is about 404.3802011790.

The spelling of 66125604 in words is "sixty-six million, one hundred twenty-five thousand, six hundred four".