66830224 has 20 divisors (see below), whose sum is σ = 129885040. Its totient is φ = 33311520.

The previous prime is 66830209. The next prime is 66830237. The reversal of 66830224 is 42203866.

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, 1014 + ... + 11605.

It is an arithmetic number, because the mean of its divisors is an integer number (6494252).

Almost surely, 2^66830224 is an apocalyptic number.

It is an amenable number.

66830224 is a deficient number, since it is larger than the sum of its proper divisors (63054816).

66830224 is a wasteful number, since it uses less digits than its factorization.

66830224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12958 (or 12952 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 66830224 is about 8174.9754739693. The cubic root of 66830224 is about 405.8114584786.

The spelling of 66830224 in words is "sixty-six million, eight hundred thirty thousand, two hundred twenty-four".