64708764 has 12 divisors (see below), whose sum is σ = 150987144. Its totient is φ = 21569584.

The previous prime is 64708751. The next prime is 64708769. The reversal of 64708764 is 46780746.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64708769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2696187 + ... + 2696210.

It is an arithmetic number, because the mean of its divisors is an integer number (12582262).

Almost surely, 2^64708764 is an apocalyptic number.

It is an amenable number.

64708764 is an abundant number, since it is smaller than the sum of its proper divisors (86278380).

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

64708764 is a wasteful number, since it uses less digits than its factorization.

64708764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392404 (or 5392402 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 64708764 is about 8044.1757812718. The cubic root of 64708764 is about 401.4711741496.

The spelling of 64708764 in words is "sixty-four million, seven hundred eight thousand, seven hundred sixty-four".