681328286 has 16 divisors (see below), whose sum is σ = 1061417520. Its totient is φ = 327729600.

The previous prime is 681328267. The next prime is 681328327. The reversal of 681328286 is 682823186.

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, 45140 + ... + 58311.

It is an arithmetic number, because the mean of its divisors is an integer number (66338595).

Almost surely, 2^681328286 is an apocalyptic number.

681328286 is a deficient number, since it is larger than the sum of its proper divisors (380089234).

681328286 is a wasteful number, since it uses less digits than its factorization.

681328286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103579.

The product of its digits is 221184, while the sum is 44.

The square root of 681328286 is about 26102.2659169659. The cubic root of 681328286 is about 879.9381352859.

The spelling of 681328286 in words is "six hundred eighty-one million, three hundred twenty-eight thousand, two hundred eighty-six".