685604494 has 16 divisors (see below), whose sum is σ = 1063005696. Its totient is φ = 331299000.

The previous prime is 685604483. The next prime is 685604497. The reversal of 685604494 is 494406586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685604497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41769 + ... + 55819.

It is an arithmetic number, because the mean of its divisors is an integer number (66437856).

Almost surely, 2^685604494 is an apocalyptic number.

685604494 is a deficient number, since it is larger than the sum of its proper divisors (377401202).

685604494 is a wasteful number, since it uses less digits than its factorization.

685604494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14871.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 685604494 is about 26184.0503742259. The cubic root of 685604494 is about 881.7752103924.

The spelling of 685604494 in words is "six hundred eighty-five million, six hundred four thousand, four hundred ninety-four".