681360337 has 6 divisors (see below), whose sum is σ = 792602898. Its totient is φ = 584023104.

The previous prime is 681360313. The next prime is 681360367. The reversal of 681360337 is 733063186.

It can be written as a sum of positive squares in only one way, i.e., 491774976 + 189585361 = 22176^2 + 13769^2 .

It is a de Polignac number, because none of the positive numbers 2^k-681360337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 681360296 and 681360305.

It is not an unprimeable number, because it can be changed into a prime (681360367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6952608 + ... + 6952705.

It is an arithmetic number, because the mean of its divisors is an integer number (132100483).

Almost surely, 2^681360337 is an apocalyptic number.

It is an amenable number.

681360337 is a deficient number, since it is larger than the sum of its proper divisors (111242561).

681360337 is a wasteful number, since it uses less digits than its factorization.

681360337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13905327 (or 13905320 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 681360337 is about 26102.8798602760. The cubic root of 681360337 is about 879.9519330667.

The spelling of 681360337 in words is "six hundred eighty-one million, three hundred sixty thousand, three hundred thirty-seven".