64923984 has 40 divisors (see below), whose sum is σ = 186357120. Its totient is φ = 21641184.

The previous prime is 64923983. The next prime is 64924129. The reversal of 64923984 is 48932946.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64923983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74712 + ... + 75575.

It is an arithmetic number, because the mean of its divisors is an integer number (4658928).

Almost surely, 2^64923984 is an apocalyptic number.

It is an amenable number.

64923984 is an abundant number, since it is smaller than the sum of its proper divisors (121433136).

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

64923984 is a wasteful number, since it uses less digits than its factorization.

64923984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150304 (or 150292 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 64923984 is about 8057.5420569799. The cubic root of 64923984 is about 401.9157765190.

The spelling of 64923984 in words is "sixty-four million, nine hundred twenty-three thousand, nine hundred eighty-four".