685847064 has 32 divisors (see below), whose sum is σ = 1959563520. Its totient is φ = 195956256.

The previous prime is 685847053. The next prime is 685847087. The reversal of 685847064 is 460748586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041044 + ... + 2041379.

It is an arithmetic number, because the mean of its divisors is an integer number (61236360).

Almost surely, 2^685847064 is an apocalyptic number.

It is an amenable number.

685847064 is an abundant number, since it is smaller than the sum of its proper divisors (1273716456).

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

685847064 is a wasteful number, since it uses less digits than its factorization.

685847064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082439 (or 4082435 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 685847064 is about 26188.6819828719. The cubic root of 685847064 is about 881.8791901623.

The spelling of 685847064 in words is "six hundred eighty-five million, eight hundred forty-seven thousand, sixty-four".