64816432 has 20 divisors (see below), whose sum is σ = 125718640. Its totient is φ = 32372928.

The previous prime is 64816417. The next prime is 64816441. The reversal of 64816432 is 23461846.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19294 + ... + 22402.

It is an arithmetic number, because the mean of its divisors is an integer number (6285932).

Almost surely, 2^64816432 is an apocalyptic number.

It is an amenable number.

64816432 is a deficient number, since it is larger than the sum of its proper divisors (60902208).

64816432 is a wasteful number, since it uses less digits than its factorization.

64816432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420 (or 4414 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 64816432 is about 8050.8652951096. The cubic root of 64816432 is about 401.6937181745.

The spelling of 64816432 in words is "sixty-four million, eight hundred sixteen thousand, four hundred thirty-two".