66373604 has 24 divisors (see below), whose sum is σ = 130803456. Its totient is φ = 29196000.

The previous prime is 66373603. The next prime is 66373613. The reversal of 66373604 is 40637366.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66373603) 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, 22967 + ... + 25694.

It is an arithmetic number, because the mean of its divisors is an integer number (5450144).

Almost surely, 2^66373604 is an apocalyptic number.

It is an amenable number.

66373604 is a deficient number, since it is larger than the sum of its proper divisors (64429852).

66373604 is a wasteful number, since it uses less digits than its factorization.

66373604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48707 (or 48705 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 66373604 is about 8146.9996931386. Note that the first 3 decimals coincide. The cubic root of 66373604 is about 404.8851048365.

The spelling of 66373604 in words is "sixty-six million, three hundred seventy-three thousand, six hundred four".