65984936 has 8 divisors (see below), whose sum is σ = 123721770. Its totient is φ = 32992464.

The previous prime is 65984927. The next prime is 65984959. The reversal of 65984936 is 63948956.

It can be written as a sum of positive squares in only one way, i.e., 34692100 + 31292836 = 5890^2 + 5594^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4124051 + ... + 4124066.

Almost surely, 2^65984936 is an apocalyptic number.

It is an amenable number.

65984936 is a deficient number, since it is larger than the sum of its proper divisors (57736834).

65984936 is a wasteful number, since it uses less digits than its factorization.

65984936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8248123 (or 8248119 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 50.

The square root of 65984936 is about 8123.1112266175. Note that the first 3 decimals coincide. The cubic root of 65984936 is about 404.0932536421.

The spelling of 65984936 in words is "sixty-five million, nine hundred eighty-four thousand, nine hundred thirty-six".