681370364 has 12 divisors (see below), whose sum is σ = 1192752624. Its totient is φ = 340583904.

The previous prime is 681370357. The next prime is 681370433. The reversal of 681370364 is 463073186.

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, 9017 + ... + 38000.

It is an arithmetic number, because the mean of its divisors is an integer number (99396052).

Almost surely, 2^681370364 is an apocalyptic number.

It is an amenable number.

681370364 is a deficient number, since it is larger than the sum of its proper divisors (511382260).

681370364 is a wasteful number, since it uses less digits than its factorization.

681370364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50644 (or 50642 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 681370364 is about 26103.0719264994. The cubic root of 681370364 is about 879.9562495467.

It can be divided in two parts, 6813 and 70364, that added together give a palindrome (77177).

The spelling of 681370364 in words is "six hundred eighty-one million, three hundred seventy thousand, three hundred sixty-four".