64046840 has 64 divisors (see below), whose sum is σ = 169313760. Its totient is φ = 21496320.

The previous prime is 64046833. The next prime is 64046861. The reversal of 64046840 is 4864046.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 64046797 and 64046806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122 + ... + 11318.

Almost surely, 2^64046840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64046840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84656880).

64046840 is an abundant number, since it is smaller than the sum of its proper divisors (105266920).

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

64046840 is a wasteful number, since it uses less digits than its factorization.

64046840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11232 (or 11228 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 64046840 is about 8002.9269645549. The cubic root of 64046840 is about 400.0975595367.

The spelling of 64046840 in words is "sixty-four million, forty-six thousand, eight hundred forty".