680654420 has 24 divisors (see below), whose sum is σ = 1431074400. Its totient is φ = 271937952.

The previous prime is 680654419. The next prime is 680654431. The reversal of 680654420 is 24456086.

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, 2630 + ... + 36989.

It is an arithmetic number, because the mean of its divisors is an integer number (59628100).

Almost surely, 2^680654420 is an apocalyptic number.

It is an amenable number.

680654420 is an abundant number, since it is smaller than the sum of its proper divisors (750419980).

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

680654420 is a wasteful number, since it uses less digits than its factorization.

680654420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40487 (or 40485 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 680654420 is about 26089.3545339857. The cubic root of 680654420 is about 879.6479394045.

The spelling of 680654420 in words is "six hundred eighty million, six hundred fifty-four thousand, four hundred twenty".