680654140 has 24 divisors (see below), whose sum is σ = 1430780400. Its totient is φ = 271993728.

The previous prime is 680654101. The next prime is 680654153. The reversal of 680654140 is 41456086.

680654140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 680654096 and 680654105.

It is a congruent number.

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, 4759 + ... + 37201.

It is an arithmetic number, because the mean of its divisors is an integer number (59615850).

Almost surely, 2^680654140 is an apocalyptic number.

It is an amenable number.

680654140 is an abundant number, since it is smaller than the sum of its proper divisors (750126260).

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

680654140 is a wasteful number, since it uses less digits than its factorization.

680654140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33501 (or 33499 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 680654140 is about 26089.3491678118. The cubic root of 680654140 is about 879.6478187845.

The spelling of 680654140 in words is "six hundred eighty million, six hundred fifty-four thousand, one hundred forty".