995640864 has 48 divisors (see below), whose sum is σ = 2642945760. Its totient is φ = 328148480.

The previous prime is 995640851. The next prime is 995640913. The reversal of 995640864 is 468046599.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49722 + ... + 66809.

It is an arithmetic number, because the mean of its divisors is an integer number (55061370).

Almost surely, 2^995640864 is an apocalyptic number.

It is an amenable number.

995640864 is an abundant number, since it is smaller than the sum of its proper divisors (1647304896).

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

995640864 is a wasteful number, since it uses less digits than its factorization.

995640864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116633 (or 116625 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 995640864 is about 31553.7773333083. Note that the first 3 decimals coincide. The cubic root of 995640864 is about 998.5448381979.

The spelling of 995640864 in words is "nine hundred ninety-five million, six hundred forty thousand, eight hundred sixty-four".