681162694 has 8 divisors (see below), whose sum is σ = 1023706728. Its totient is φ = 339927120.

The previous prime is 681162683. The next prime is 681162719. The reversal of 681162694 is 496261186.

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

It is a self number, because there is not a number n which added to its sum of digits gives 681162694.

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, 325812 + ... + 327895.

It is an arithmetic number, because the mean of its divisors is an integer number (127963341).

Almost surely, 2^681162694 is an apocalyptic number.

681162694 is a deficient number, since it is larger than the sum of its proper divisors (342544034).

681162694 is a wasteful number, since it uses less digits than its factorization.

681162694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654230.

The product of its digits is 124416, while the sum is 43.

The square root of 681162694 is about 26099.0937390554. The cubic root of 681162694 is about 879.8668419389.

The spelling of 681162694 in words is "six hundred eighty-one million, one hundred sixty-two thousand, six hundred ninety-four".