64394432 has 14 divisors (see below), whose sum is σ = 127782828. Its totient is φ = 32197184.

The previous prime is 64394431. The next prime is 64394441. The reversal of 64394432 is 23449346.

It is a junction number, because it is equal to n+sod(n) for n = 64394392 and 64394401.

It is not an unprimeable number, because it can be changed into a prime (64394431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503018 + ... + 503145.

Almost surely, 2^64394432 is an apocalyptic number.

It is an amenable number.

64394432 is a deficient number, since it is larger than the sum of its proper divisors (63388396).

64394432 is a wasteful number, since it uses less digits than its factorization.

64394432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006175 (or 1006165 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 64394432 is about 8024.6141340254. The cubic root of 64394432 is about 400.8200509754.

The spelling of 64394432 in words is "sixty-four million, three hundred ninety-four thousand, four hundred thirty-two".