681174853 has 8 divisors (see below), whose sum is σ = 721626840. Its totient is φ = 640765440.

The previous prime is 681174841. The next prime is 681174869. The reversal of 681174853 is 358471186.

681174853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 414244609 + 266930244 = 20353^2 + 16338^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 681174853 - 2⁵ = 681174821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681174353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25923 + ... + 45103.

It is an arithmetic number, because the mean of its divisors is an integer number (90203355).

Almost surely, 2^681174853 is an apocalyptic number.

It is an amenable number.

681174853 is a deficient number, since it is larger than the sum of its proper divisors (40451987).

681174853 is a wasteful number, since it uses less digits than its factorization.

681174853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21287.

The product of its digits is 161280, while the sum is 43.

The square root of 681174853 is about 26099.3266771386. The cubic root of 681174853 is about 879.8720772213.

The spelling of 681174853 in words is "six hundred eighty-one million, one hundred seventy-four thousand, eight hundred fifty-three".