320680677 has 4 divisors (see below), whose sum is σ = 427574240. Its totient is φ = 213787116.

The previous prime is 320680669. The next prime is 320680691. The reversal of 320680677 is 776086023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 320680677 - 2³ = 320680669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320680667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53446777 + ... + 53446782.

It is an arithmetic number, because the mean of its divisors is an integer number (106893560).

Almost surely, 2^320680677 is an apocalyptic number.

It is an amenable number.

320680677 is a deficient number, since it is larger than the sum of its proper divisors (106893563).

320680677 is a wasteful number, since it uses less digits than its factorization.

320680677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106893562.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 320680677 is about 17907.5592139186. The cubic root of 320680677 is about 684.4750107507.

The spelling of 320680677 in words is "three hundred twenty million, six hundred eighty thousand, six hundred seventy-seven".