685480842 has 24 divisors (see below), whose sum is σ = 1485775044. Its totient is φ = 228406464.

The previous prime is 685480837. The next prime is 685480871. The reversal of 685480842 is 248084586.

685480842 is a `hidden beast` number, since 68 + 548 + 0 + 8 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 679175721 + 6305121 = 26061^2 + 2511^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56248 + ... + 67340.

Almost surely, 2^685480842 is an apocalyptic number.

685480842 is an abundant number, since it is smaller than the sum of its proper divisors (800294202).

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

685480842 is a wasteful number, since it uses less digits than its factorization.

685480842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14534 (or 14531 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The square root of 685480842 is about 26181.6890593407. The cubic root of 685480842 is about 881.7221964343.

The spelling of 685480842 in words is "six hundred eighty-five million, four hundred eighty thousand, eight hundred forty-two".