686642327446 has 8 divisors (see below), whose sum is σ = 1039412697840. Its totient is φ = 340171428168.

The previous prime is 686642327411. The next prime is 686642327467. The reversal of 686642327446 is 644723246686.

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

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, 1574867506 + ... + 1574867941.

It is an arithmetic number, because the mean of its divisors is an integer number (129926587230).

Almost surely, 2^686642327446 is an apocalyptic number.

686642327446 is a deficient number, since it is larger than the sum of its proper divisors (352770370394).

686642327446 is a wasteful number, since it uses less digits than its factorization.

686642327446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149735558.

The product of its digits is 55738368, while the sum is 58.

The spelling of 686642327446 in words is "six hundred eighty-six billion, six hundred forty-two million, three hundred twenty-seven thousand, four hundred forty-six".