320677655 has 4 divisors (see below), whose sum is σ = 384813192. Its totient is φ = 256542120.

The previous prime is 320677639. The next prime is 320677657. The reversal of 320677655 is 556776023.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 320677655 - 2⁴ = 320677639 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 (320677657) 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, 32067761 + ... + 32067770.

It is an arithmetic number, because the mean of its divisors is an integer number (96203298).

Almost surely, 2^320677655 is an apocalyptic number.

320677655 is a deficient number, since it is larger than the sum of its proper divisors (64135537).

320677655 is an equidigital number, since it uses as much as digits as its factorization.

320677655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64135536.

The product of its (nonzero) digits is 264600, while the sum is 41.

The square root of 320677655 is about 17907.4748359449. The cubic root of 320677655 is about 684.4728606472.

The spelling of 320677655 in words is "three hundred twenty million, six hundred seventy-seven thousand, six hundred fifty-five".