320930687 has 8 divisors (see below), whose sum is σ = 400121472. Its totient is φ = 250075800.

The previous prime is 320930681. The next prime is 320930713. The reversal of 320930687 is 786039023.

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

It is a cyclic number.

It is not a de Polignac number, because 320930687 - 2⁴ = 320930671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320930687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320930681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083889 + ... + 2084042.

It is an arithmetic number, because the mean of its divisors is an integer number (50015184).

Almost surely, 2^320930687 is an apocalyptic number.

320930687 is a deficient number, since it is larger than the sum of its proper divisors (79190785).

320930687 is a wasteful number, since it uses less digits than its factorization.

320930687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167949.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 320930687 is about 17914.5384255358. The cubic root of 320930687 is about 684.6528420097.

The spelling of 320930687 in words is "three hundred twenty million, nine hundred thirty thousand, six hundred eighty-seven".