681896786 has 8 divisors (see below), whose sum is σ = 1023164400. Its totient is φ = 340841988.

The previous prime is 681896779. The next prime is 681896797. The reversal of 681896786 is 687698186.

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

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, 44936 + ... + 58163.

It is an arithmetic number, because the mean of its divisors is an integer number (127895550).

Almost surely, 2^681896786 is an apocalyptic number.

681896786 is a deficient number, since it is larger than the sum of its proper divisors (341267614).

681896786 is a wasteful number, since it uses less digits than its factorization.

681896786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106408.

The product of its digits is 6967296, while the sum is 59.

The square root of 681896786 is about 26113.1535054654. The cubic root of 681896786 is about 880.1828072353.

The spelling of 681896786 in words is "six hundred eighty-one million, eight hundred ninety-six thousand, seven hundred eighty-six".