66870704 has 10 divisors (see below), whose sum is σ = 129562020. Its totient is φ = 33435344.

The previous prime is 66870697. The next prime is 66870731. The reversal of 66870704 is 40707866.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2089694 + ... + 2089725.

It is an arithmetic number, because the mean of its divisors is an integer number (12956202).

Almost surely, 2^66870704 is an apocalyptic number.

It is an amenable number.

66870704 is a deficient number, since it is larger than the sum of its proper divisors (62691316).

66870704 is a wasteful number, since it uses less digits than its factorization.

66870704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179427 (or 4179421 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 66870704 is about 8177.4509475753. The cubic root of 66870704 is about 405.8933771637.

The spelling of 66870704 in words is "sixty-six million, eight hundred seventy thousand, seven hundred four".