685854746 has 16 divisors (see below), whose sum is σ = 1058857920. Its totient is φ = 333046560.

The previous prime is 685854721. The next prime is 685854751. The reversal of 685854746 is 647458586.

It is a happy number.

It is a super-2 number, since 2×685854746² = 940793465221449032, which contains 22 as substring.

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, 26531 + ... + 45558.

It is an arithmetic number, because the mean of its divisors is an integer number (66178620).

Almost surely, 2^685854746 is an apocalyptic number.

685854746 is a deficient number, since it is larger than the sum of its proper divisors (373003174).

685854746 is a wasteful number, since it uses less digits than its factorization.

685854746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72229.

The product of its digits is 6451200, while the sum is 53.

The square root of 685854746 is about 26188.8286488724. The cubic root of 685854746 is about 881.8824827188.

The spelling of 685854746 in words is "six hundred eighty-five million, eight hundred fifty-four thousand, seven hundred forty-six".