320577863 has 4 divisors (see below), whose sum is σ = 320803008. Its totient is φ = 320352720.

The previous prime is 320577847. The next prime is 320577931. The reversal of 320577863 is 368775023.

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

It is a cyclic number.

It is not a de Polignac number, because 320577863 - 2⁴ = 320577847 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 320577863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320577163) 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, 110423 + ... + 113288.

It is an arithmetic number, because the mean of its divisors is an integer number (80200752).

Almost surely, 2^320577863 is an apocalyptic number.

320577863 is a deficient number, since it is larger than the sum of its proper divisors (225145).

320577863 is a wasteful number, since it uses less digits than its factorization.

320577863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225144.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 320577863 is about 17904.6882966445. The cubic root of 320577863 is about 684.4018526831.

The spelling of 320577863 in words is "three hundred twenty million, five hundred seventy-seven thousand, eight hundred sixty-three".