65896631904 has 96 divisors (see below), whose sum is σ = 175484897280. Its totient is φ = 21649420800.

The previous prime is 65896631903. The next prime is 65896631917. The reversal of 65896631904 is 40913669856.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65896631903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1982139 + ... + 2015109.

It is an arithmetic number, because the mean of its divisors is an integer number (1827967680).

Almost surely, 2^65896631904 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 65896631904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87742448640).

65896631904 is an abundant number, since it is smaller than the sum of its proper divisors (109588265376).

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

65896631904 is a wasteful number, since it uses less digits than its factorization.

65896631904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33284 (or 33276 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 65896631904 in words is "sixty-five billion, eight hundred ninety-six million, six hundred thirty-one thousand, nine hundred four".