681232365 has 96 divisors (see below), whose sum is σ = 1370079360. Its totient is φ = 309657600.

The previous prime is 681232361. The next prime is 681232367. The reversal of 681232365 is 563232186.

It is a happy number.

681232365 is a `hidden beast` number, since 68 + 1 + 232 + 365 = 666.

It is not a de Polignac number, because 681232365 - 2² = 681232361 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681232361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1062445 + ... + 1063085.

It is an arithmetic number, because the mean of its divisors is an integer number (14271660).

Almost surely, 2^681232365 is an apocalyptic number.

It is an amenable number.

681232365 is an abundant number, since it is smaller than the sum of its proper divisors (688846995).

681232365 is a wasteful number, since it uses less digits than its factorization.

681232365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 792 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 681232365 is about 26100.4284447593. The cubic root of 681232365 is about 879.8968392329.

The spelling of 681232365 in words is "six hundred eighty-one million, two hundred thirty-two thousand, three hundred sixty-five".