695256878640 has 80 divisors (see below), whose sum is σ = 2155473871200. Its totient is φ = 185386561536.

The previous prime is 695256878581. The next prime is 695256878653. The reversal of 695256878640 is 46878652596.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2966056 + ... + 3191864.

It is an arithmetic number, because the mean of its divisors is an integer number (26943423390).

Almost surely, 2^695256878640 is an apocalyptic number.

695256878640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

695256878640 is an abundant number, since it is smaller than the sum of its proper divisors (1460216992560).

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

695256878640 is a wasteful number, since it uses less digits than its factorization.

695256878640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238654 (or 238648 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 66.

The spelling of 695256878640 in words is "six hundred ninety-five billion, two hundred fifty-six million, eight hundred seventy-eight thousand, six hundred forty".