64994679 has 6 divisors (see below), whose sum is σ = 93881216. Its totient is φ = 43329780.

The previous prime is 64994641. The next prime is 64994701. The reversal of 64994679 is 97649946.

It is not a de Polignac number, because 64994679 - 2¹⁷ = 64863607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64994609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3610807 + ... + 3610824.

Almost surely, 2^64994679 is an apocalyptic number.

64994679 is a deficient number, since it is larger than the sum of its proper divisors (28886537).

64994679 is a wasteful number, since it uses less digits than its factorization.

64994679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221637 (or 7221634 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 64994679 is about 8061.9277471334. The cubic root of 64994679 is about 402.0616041330.

The spelling of 64994679 in words is "sixty-four million, nine hundred ninety-four thousand, six hundred seventy-nine".