66892975 has 12 divisors (see below), whose sum is σ = 83387520. Its totient is φ = 53230400.

The previous prime is 66892963. The next prime is 66892981. The reversal of 66892975 is 57929866.

It is a happy number.

It is not a de Polignac number, because 66892975 - 2²³ = 58504367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2230 + ... + 11779.

It is an arithmetic number, because the mean of its divisors is an integer number (6948960).

Almost surely, 2^66892975 is an apocalyptic number.

66892975 is a deficient number, since it is larger than the sum of its proper divisors (16494545).

66892975 is a wasteful number, since it uses less digits than its factorization.

66892975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14210 (or 14205 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The square root of 66892975 is about 8178.8125666260. The cubic root of 66892975 is about 405.9384325094.

The spelling of 66892975 in words is "sixty-six million, eight hundred ninety-two thousand, nine hundred seventy-five".