681116606 has 16 divisors (see below), whose sum is σ = 1045328928. Its totient is φ = 332748000.

The previous prime is 681116599. The next prime is 681116633. The reversal of 681116606 is 606611186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 36908.

It is an arithmetic number, because the mean of its divisors is an integer number (65333058).

Almost surely, 2^681116606 is an apocalyptic number.

681116606 is a deficient number, since it is larger than the sum of its proper divisors (364212322).

681116606 is a wasteful number, since it uses less digits than its factorization.

681116606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37187.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 681116606 is about 26098.2107815842. The cubic root of 681116606 is about 879.8469973320.

The spelling of 681116606 in words is "six hundred eighty-one million, one hundred sixteen thousand, six hundred six".