684560942 has 16 divisors (see below), whose sum is σ = 1107146880. Its totient is φ = 315574752.

The previous prime is 684560927. The next prime is 684560951. The reversal of 684560942 is 249065486.

It is a junction number, because it is equal to n+sod(n) for n = 684560893 and 684560902.

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, 7184 + ... + 37692.

It is an arithmetic number, because the mean of its divisors is an integer number (69196680).

Almost surely, 2^684560942 is an apocalyptic number.

684560942 is a deficient number, since it is larger than the sum of its proper divisors (422585938).

684560942 is a wasteful number, since it uses less digits than its factorization.

684560942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31387.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 684560942 is about 26164.1155401821. The cubic root of 684560942 is about 881.3276026962.

The spelling of 684560942 in words is "six hundred eighty-four million, five hundred sixty thousand, nine hundred forty-two".