64769916 has 12 divisors (see below), whose sum is σ = 151129832. Its totient is φ = 21589968.

The previous prime is 64769899. The next prime is 64769933. The reversal of 64769916 is 61996746.

It is an interprime number because it is at equal distance from previous prime (64769899) and next prime (64769933).

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 2698735 + ... + 2698758.

Almost surely, 2^64769916 is an apocalyptic number.

It is an amenable number.

64769916 is an abundant number, since it is smaller than the sum of its proper divisors (86359916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64769916 is a wasteful number, since it uses less digits than its factorization.

64769916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397500 (or 5397498 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 64769916 is about 8047.9758945961. The cubic root of 64769916 is about 401.5976023386.

The spelling of 64769916 in words is "sixty-four million, seven hundred sixty-nine thousand, nine hundred sixteen".