66976750 has 16 divisors (see below), whose sum is σ = 125380944. Its totient is φ = 26790600.

The previous prime is 66976717. The next prime is 66976769. The reversal of 66976750 is 5767966.

It is a self number, because there is not a number n which added to its sum of digits gives 66976750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133704 + ... + 134203.

It is an arithmetic number, because the mean of its divisors is an integer number (7836309).

Almost surely, 2^66976750 is an apocalyptic number.

66976750 is a deficient number, since it is larger than the sum of its proper divisors (58404194).

66976750 is a wasteful number, since it uses less digits than its factorization.

66976750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267924 (or 267914 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 66976750 is about 8183.9324288511. The cubic root of 66976750 is about 406.1078240155.

The spelling of 66976750 in words is "sixty-six million, nine hundred seventy-six thousand, seven hundred fifty".