681094662 has 8 divisors (see below), whose sum is σ = 1362189336. Its totient is φ = 227031552.

The previous prime is 681094657. The next prime is 681094717. The reversal of 681094662 is 266490186.

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

681094662 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56757883 + ... + 56757894.

It is an arithmetic number, because the mean of its divisors is an integer number (170273667).

Almost surely, 2^681094662 is an apocalyptic number.

681094662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

681094662 is a wasteful number, since it uses less digits than its factorization.

681094662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113515782.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 681094662 is about 26097.7903662360. The cubic root of 681094662 is about 879.8375483528.

It can be divided in two parts, 68109 and 4662, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 681094662 in words is "six hundred eighty-one million, ninety-four thousand, six hundred sixty-two".