681476817 has 8 divisors (see below), whose sum is σ = 1038440896. Its totient is φ = 389415312.

The previous prime is 681476791. The next prime is 681476833. The reversal of 681476817 is 718674186.

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

It is not a de Polignac number, because 681476817 - 2⁶ = 681476753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681472817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16225618 + ... + 16225659.

It is an arithmetic number, because the mean of its divisors is an integer number (129805112).

Almost surely, 2^681476817 is an apocalyptic number.

It is an amenable number.

681476817 is a deficient number, since it is larger than the sum of its proper divisors (356964079).

681476817 is a wasteful number, since it uses less digits than its factorization.

681476817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32451287.

The product of its digits is 451584, while the sum is 48.

The square root of 681476817 is about 26105.1109363665. The cubic root of 681476817 is about 880.0020734283.

The spelling of 681476817 in words is "six hundred eighty-one million, four hundred seventy-six thousand, eight hundred seventeen".