680170643526 has 32 divisors (see below), whose sum is σ = 1486006103808. Its totient is φ = 205834895840.

The previous prime is 680170643497. The next prime is 680170643533. The reversal of 680170643526 is 625346071086.

It is a congruent number.

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, 6886101 + ... + 6984176.

It is an arithmetic number, because the mean of its divisors is an integer number (46437690744).

Almost surely, 2^680170643526 is an apocalyptic number.

680170643526 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

680170643526 is an abundant number, since it is smaller than the sum of its proper divisors (805835460282).

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

680170643526 is a wasteful number, since it uses less digits than its factorization.

680170643526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13871036.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 680170643526 in words is "six hundred eighty billion, one hundred seventy million, six hundred forty-three thousand, five hundred twenty-six".