64309764 has 24 divisors (see below), whose sum is σ = 152601120. Its totient is φ = 21073024.

The previous prime is 64309757. The next prime is 64309783. The reversal of 64309764 is 46790346.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44709 + ... + 46124.

It is an arithmetic number, because the mean of its divisors is an integer number (6358380).

Almost surely, 2^64309764 is an apocalyptic number.

It is an amenable number.

64309764 is an abundant number, since it is smaller than the sum of its proper divisors (88291356).

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

64309764 is a wasteful number, since it uses less digits than its factorization.

64309764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90899 (or 90897 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 64309764 is about 8019.3368803162. The cubic root of 64309764 is about 400.6443032926.

The spelling of 64309764 in words is "sixty-four million, three hundred nine thousand, seven hundred sixty-four".