320197005 has 24 divisors (see below), whose sum is σ = 556323768. Its totient is φ = 170366976.

The previous prime is 320196979. The next prime is 320197019. The reversal of 320197005 is 500791023.

It can be written as a sum of positive squares in 4 ways, for example, as 57562569 + 262634436 = 7587^2 + 16206^2 .

It is not a de Polignac number, because 320197005 - 2⁵ = 320196973 is a prime.

It is a super-2 number, since 2×320197005² = 205052244021940050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 320197005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11269 + ... + 27701.

It is an arithmetic number, because the mean of its divisors is an integer number (23180157).

Almost surely, 2^320197005 is an apocalyptic number.

It is an amenable number.

320197005 is a deficient number, since it is larger than the sum of its proper divisors (236126763).

320197005 is a wasteful number, since it uses less digits than its factorization.

320197005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16877 (or 16874 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 320197005 is about 17894.0494299083. The cubic root of 320197005 is about 684.1307139640.

The spelling of 320197005 in words is "three hundred twenty million, one hundred ninety-seven thousand, five".