320170077 has 20 divisors (see below), whose sum is σ = 493710976. Its totient is φ = 206559720.

The previous prime is 320170033. The next prime is 320170091. The reversal of 320170077 is 770071023.

It is not a de Polignac number, because 320170077 - 2¹¹ = 320168029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 320170077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320170177) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 61243 + ... + 66264.

Almost surely, 2^320170077 is an apocalyptic number.

It is an amenable number.

320170077 is a deficient number, since it is larger than the sum of its proper divisors (173540899).

320170077 is a wasteful number, since it uses less digits than its factorization.

320170077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127550 (or 127541 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The square root of 320170077 is about 17893.2969851841. The cubic root of 320170077 is about 684.1115353666. Note that the first 3 decimals are identical.

The spelling of 320170077 in words is "three hundred twenty million, one hundred seventy thousand, seventy-seven".