681553302 has 32 divisors (see below), whose sum is σ = 1416048480. Its totient is φ = 218426880.

The previous prime is 681553253. The next prime is 681553333. The reversal of 681553302 is 203355186.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33808 + ... + 50060.

It is an arithmetic number, because the mean of its divisors is an integer number (44251515).

Almost surely, 2^681553302 is an apocalyptic number.

681553302 is an abundant number, since it is smaller than the sum of its proper divisors (734495178).

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

681553302 is a wasteful number, since it uses less digits than its factorization.

681553302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16528.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 681553302 is about 26106.5758382826. The cubic root of 681553302 is about 880.0349943040.

The spelling of 681553302 in words is "six hundred eighty-one million, five hundred fifty-three thousand, three hundred two".