681296356 has 12 divisors (see below), whose sum is σ = 1283981692. Its totient is φ = 314444448.

The previous prime is 681296353. The next prime is 681296377. The reversal of 681296356 is 653692186.

It can be written as a sum of positive squares in 2 ways, for example, as 407393856 + 273902500 = 20184^2 + 16550^2 .

It is not an unprimeable number, because it can be changed into a prime (681296351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6550875 + ... + 6550978.

Almost surely, 2^681296356 is an apocalyptic number.

It is an amenable number.

681296356 is a deficient number, since it is larger than the sum of its proper divisors (602685336).

681296356 is a wasteful number, since it uses less digits than its factorization.

681296356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13101870 (or 13101868 counting only the distinct ones).

The product of its digits is 466560, while the sum is 46.

The square root of 681296356 is about 26101.6542770760. The cubic root of 681296356 is about 879.9243891648.

The spelling of 681296356 in words is "six hundred eighty-one million, two hundred ninety-six thousand, three hundred fifty-six".