680641282560 has 80 divisors (see below), whose sum is σ = 2175925124736. Its totient is φ = 181504339968.

The previous prime is 680641282553. The next prime is 680641282597. The reversal of 680641282560 is 65282146086.

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

It is a Harshad number since it is a multiple of its sum of digits (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, 44304904 + ... + 44320263.

Almost surely, 2^680641282560 is an apocalyptic number.

680641282560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680641282560 is an abundant number, since it is smaller than the sum of its proper divisors (1495283842176).

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

680641282560 is an equidigital number, since it uses as much as digits as its factorization.

680641282560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88625193 (or 88625177 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 680641282560 in words is "six hundred eighty billion, six hundred forty-one million, two hundred eighty-two thousand, five hundred sixty".