681153516 has 48 divisors (see below), whose sum is σ = 1803540480. Its totient is φ = 222218640.

The previous prime is 681153493. The next prime is 681153521. The reversal of 681153516 is 615351186.

681153516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×681153516² = 927940224718324512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62020 + ... + 72171.

It is an arithmetic number, because the mean of its divisors is an integer number (37573760).

Almost surely, 2^681153516 is an apocalyptic number.

It is an amenable number.

681153516 is an abundant number, since it is smaller than the sum of its proper divisors (1122386964).

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

681153516 is a wasteful number, since it uses less digits than its factorization.

681153516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134251 (or 134243 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 681153516 is about 26098.9179086030. The cubic root of 681153516 is about 879.8628901399.

It can be divided in two parts, 68115 and 3516, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 681153516 in words is "six hundred eighty-one million, one hundred fifty-three thousand, five hundred sixteen".