680020016 has 20 divisors (see below), whose sum is σ = 1418888352. Its totient is φ = 313855296.

The previous prime is 680019997. The next prime is 680020027. The reversal of 680020016 is 610020086.

It is a junction number, because it is equal to n+sod(n) for n = 680019973 and 680020000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634456 + ... + 1634871.

Almost surely, 2^680020016 is an apocalyptic number.

It is an amenable number.

680020016 is an abundant number, since it is smaller than the sum of its proper divisors (738868336).

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

680020016 is a wasteful number, since it uses less digits than its factorization.

680020016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269348 (or 3269342 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 680020016 is about 26077.1934072668. The cubic root of 680020016 is about 879.3745624786.

The spelling of 680020016 in words is "six hundred eighty million, twenty thousand, sixteen".