681169460 has 12 divisors (see below), whose sum is σ = 1430455908. Its totient is φ = 272467776.

The previous prime is 681169457. The next prime is 681169471. The reversal of 681169460 is 64961186.

It can be written as a sum of positive squares in 2 ways, for example, as 229946896 + 451222564 = 15164^2 + 21242^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17029217 + ... + 17029256.

It is an arithmetic number, because the mean of its divisors is an integer number (119204659).

Almost surely, 2^681169460 is an apocalyptic number.

It is an amenable number.

681169460 is an abundant number, since it is smaller than the sum of its proper divisors (749286448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681169460 is a wasteful number, since it uses less digits than its factorization.

681169460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34058482 (or 34058480 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 681169460 is about 26099.2233600925. The cubic root of 681169460 is about 879.8697551730.

The spelling of 681169460 in words is "six hundred eighty-one million, one hundred sixty-nine thousand, four hundred sixty".