64416870 has 144 divisors (see below), whose sum is σ = 202417488. Its totient is φ = 14696640.

The previous prime is 64416797. The next prime is 64416883. The reversal of 64416870 is 7861446.

64416870 is a `hidden beast` number, since 644 + 1 + 6 + 8 + 7 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 118800 + ... + 119340.

It is an arithmetic number, because the mean of its divisors is an integer number (1405677).

Almost surely, 2^64416870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64416870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101208744).

64416870 is an abundant number, since it is smaller than the sum of its proper divisors (138000618).

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

64416870 is a wasteful number, since it uses less digits than its factorization.

64416870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 64416870 is about 8026.0120857123. The cubic root of 64416870 is about 400.8666003205.

The spelling of 64416870 in words is "sixty-four million, four hundred sixteen thousand, eight hundred seventy".