680019942 has 48 divisors (see below), whose sum is σ = 1584636480. Its totient is φ = 193978512.

The previous prime is 680019889. The next prime is 680019979. The reversal of 680019942 is 249910086.

It is a self number, because there is not a number n which added to its sum of digits gives 680019942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229909 + ... + 232847.

It is an arithmetic number, because the mean of its divisors is an integer number (33013260).

Almost surely, 2^680019942 is an apocalyptic number.

680019942 is an abundant number, since it is smaller than the sum of its proper divisors (904616538).

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

680019942 is a wasteful number, since it uses less digits than its factorization.

680019942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745 (or 3738 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 680019942 is about 26077.1919884024. The cubic root of 680019942 is about 879.3745305807.

The spelling of 680019942 in words is "six hundred eighty million, nineteen thousand, nine hundred forty-two".