685486814 has 4 divisors (see below), whose sum is σ = 1028230224. Its totient is φ = 342743406.

The previous prime is 685486771. The next prime is 685486847. The reversal of 685486814 is 418684586.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171371702 + ... + 171371705.

It is an arithmetic number, because the mean of its divisors is an integer number (257057556).

Almost surely, 2^685486814 is an apocalyptic number.

685486814 is a deficient number, since it is larger than the sum of its proper divisors (342743410).

685486814 is a wasteful number, since it uses less digits than its factorization.

685486814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342743409.

The product of its digits is 1474560, while the sum is 50.

The square root of 685486814 is about 26181.8031082659. The cubic root of 685486814 is about 881.7247569871.

The spelling of 685486814 in words is "six hundred eighty-five million, four hundred eighty-six thousand, eight hundred fourteen".