64907707896 has 96 divisors (see below), whose sum is σ = 181945764000. Its totient is φ = 20879238912.

The previous prime is 64907707889. The next prime is 64907707919. The reversal of 64907707896 is 69870770946.

64907707896 is a `hidden beast` number, since 6 + 490 + 7 + 70 + 78 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4814461 + ... + 4827923.

It is an arithmetic number, because the mean of its divisors is an integer number (1895268375).

Almost surely, 2^64907707896 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 64907707896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90972882000).

64907707896 is an abundant number, since it is smaller than the sum of its proper divisors (117038056104).

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

64907707896 is a wasteful number, since it uses less digits than its factorization.

64907707896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15813 (or 15806 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The spelling of 64907707896 in words is "sixty-four billion, nine hundred seven million, seven hundred seven thousand, eight hundred ninety-six".