681474812 has 6 divisors (see below), whose sum is σ = 1192580928. Its totient is φ = 340737404.

The previous prime is 681474809. The next prime is 681474823. The reversal of 681474812 is 218474186.

It is a self number, because there is not a number n which added to its sum of digits gives 681474812.

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, 85184348 + ... + 85184355.

It is an arithmetic number, because the mean of its divisors is an integer number (198763488).

Almost surely, 2^681474812 is an apocalyptic number.

It is an amenable number.

681474812 is a deficient number, since it is larger than the sum of its proper divisors (511106116).

681474812 is a wasteful number, since it uses less digits than its factorization.

681474812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170368707 (or 170368705 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 681474812 is about 26105.0725338965. The cubic root of 681474812 is about 880.0012103978.

It can be divided in two parts, 681474 and 812, that added together give a palindrome (682286).

The spelling of 681474812 in words is "six hundred eighty-one million, four hundred seventy-four thousand, eight hundred twelve".