680073540 has 24 divisors (see below), whose sum is σ = 1904206080. Its totient is φ = 181352928.

The previous prime is 680073533. The next prime is 680073547. The reversal of 680073540 is 45370086.

It is an interprime number because it is at equal distance from previous prime (680073533) and next prime (680073547).

It is not an unprimeable number, because it can be changed into a prime (680073547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5667220 + ... + 5667339.

It is an arithmetic number, because the mean of its divisors is an integer number (79341920).

Almost surely, 2^680073540 is an apocalyptic number.

680073540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680073540 is an abundant number, since it is smaller than the sum of its proper divisors (1224132540).

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

680073540 is a wasteful number, since it uses less digits than its factorization.

680073540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11334571 (or 11334569 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 680073540 is about 26078.2196478211. The cubic root of 680073540 is about 879.3976335688.

The spelling of 680073540 in words is "six hundred eighty million, seventy-three thousand, five hundred forty".