83666864 has 20 divisors (see below), whose sum is σ = 162743304. Its totient is φ = 41668608.

The previous prime is 83666813. The next prime is 83666873. The reversal of 83666864 is 46866638.

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, 6062 + ... + 14285.

Almost surely, 2^83666864 is an apocalyptic number.

It is an amenable number.

83666864 is a deficient number, since it is larger than the sum of its proper divisors (79076440).

83666864 is a wasteful number, since it uses less digits than its factorization.

83666864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20612 (or 20606 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The square root of 83666864 is about 9146.9592761748. The cubic root of 83666864 is about 437.3721884062.

The spelling of 83666864 in words is "eighty-three million, six hundred sixty-six thousand, eight hundred sixty-four".