64779964 has 6 divisors (see below), whose sum is σ = 113364944. Its totient is φ = 32389980.

The previous prime is 64779947. The next prime is 64779971. The reversal of 64779964 is 46997746.

It is a congruent number.

It is an unprimeable number.

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, 8097492 + ... + 8097499.

Almost surely, 2^64779964 is an apocalyptic number.

It is an amenable number.

64779964 is a deficient number, since it is larger than the sum of its proper divisors (48584980).

64779964 is a wasteful number, since it uses less digits than its factorization.

64779964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16194995 (or 16194993 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The square root of 64779964 is about 8048.6001267301. The cubic root of 64779964 is about 401.6183683789.

The spelling of 64779964 in words is "sixty-four million, seven hundred seventy-nine thousand, nine hundred sixty-four".