66040204 has 12 divisors (see below), whose sum is σ = 115894800. Its totient is φ = 32927408.

The previous prime is 66040187. The next prime is 66040211. The reversal of 66040204 is 40204066.

It is a super-2 number, since 2×66040204² = 8722617088723232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21559 + ... + 24430.

It is an arithmetic number, because the mean of its divisors is an integer number (9657900).

Almost surely, 2^66040204 is an apocalyptic number.

It is an amenable number.

66040204 is a deficient number, since it is larger than the sum of its proper divisors (49854596).

66040204 is a wasteful number, since it uses less digits than its factorization.

66040204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46352 (or 46350 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 66040204 is about 8126.5124130835. The cubic root of 66040204 is about 404.2060429887.

The spelling of 66040204 in words is "sixty-six million, forty thousand, two hundred four".