685470874 has 8 divisors (see below), whose sum is σ = 1121679648. Its totient is φ = 311577660.

The previous prime is 685470857. The next prime is 685470887. The reversal of 685470874 is 478074586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 15578862 + ... + 15578905.

It is an arithmetic number, because the mean of its divisors is an integer number (140209956).

Almost surely, 2^685470874 is an apocalyptic number.

685470874 is a deficient number, since it is larger than the sum of its proper divisors (436208774).

685470874 is a wasteful number, since it uses less digits than its factorization.

685470874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31157780.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 685470874 is about 26181.4986965987. The cubic root of 685470874 is about 881.7179225247.

The spelling of 685470874 in words is "six hundred eighty-five million, four hundred seventy thousand, eight hundred seventy-four".