685516894 has 8 divisors (see below), whose sum is σ = 1028480400. Its totient is φ = 342690096.

The previous prime is 685516883. The next prime is 685516907. The reversal of 685516894 is 498615586.

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

It is a congruent number.

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, 20554 + ... + 42349.

It is an arithmetic number, because the mean of its divisors is an integer number (128560050).

Almost surely, 2^685516894 is an apocalyptic number.

685516894 is a deficient number, since it is larger than the sum of its proper divisors (342963506).

685516894 is a wasteful number, since it uses less digits than its factorization.

685516894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68354.

The product of its digits is 2073600, while the sum is 52.

The square root of 685516894 is about 26182.3775467393. The cubic root of 685516894 is about 881.7376538521.

The spelling of 685516894 in words is "six hundred eighty-five million, five hundred sixteen thousand, eight hundred ninety-four".