64910916 has 96 divisors (see below), whose sum is σ = 202496000. Its totient is φ = 17565984.

The previous prime is 64910891. The next prime is 64910933. The reversal of 64910916 is 61901946.

64910916 is a `hidden beast` number, since 649 + 1 + 0 + 9 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12105 + ... + 16623.

Almost surely, 2^64910916 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 64910916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101248000).

64910916 is an abundant number, since it is smaller than the sum of its proper divisors (137585084).

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

64910916 is a wasteful number, since it uses less digits than its factorization.

64910916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4558 (or 4550 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 64910916 is about 8056.7310989011. The cubic root of 64910916 is about 401.8888086330. Note that the first 4 decimals are identical.

64910916 divided by its sum of digits (36) gives a palindrome (1803081).

The spelling of 64910916 in words is "sixty-four million, nine hundred ten thousand, nine hundred sixteen".