65977012 has 6 divisors (see below), whose sum is σ = 115459778. Its totient is φ = 32988504.

The previous prime is 65976947. The next prime is 65977019. The reversal of 65977012 is 21077956.

It can be written as a sum of positive squares in only one way, i.e., 47692836 + 18284176 = 6906^2 + 4276^2 .

It is a super-2 number, since 2×65977012² = 8705932224896288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65977019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8247123 + ... + 8247130.

Almost surely, 2^65977012 is an apocalyptic number.

It is an amenable number.

65977012 is a deficient number, since it is larger than the sum of its proper divisors (49482766).

65977012 is a wasteful number, since it uses less digits than its factorization.

65977012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16494257 (or 16494255 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 65977012 is about 8122.6234678212. The cubic root of 65977012 is about 404.0770774090.

The spelling of 65977012 in words is "sixty-five million, nine hundred seventy-seven thousand, twelve".