658165213 has 4 divisors (see below), whose sum is σ = 675953500. Its totient is φ = 640376928.

The previous prime is 658165199. The next prime is 658165219. The reversal of 658165213 is 312561856.

It is the 10474-th star number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 593555769 + 64609444 = 24363^2 + 8038^2 .

It is a cyclic number.

It is not a de Polignac number, because 658165213 - 2²⁹ = 121294301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 17788249 = 658165213 / (6 + 5 + 8 + 1 + 6 + 5 + 2 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (658165219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8894088 + ... + 8894161.

It is an arithmetic number, because the mean of its divisors is an integer number (168988375).

Almost surely, 2^658165213 is an apocalyptic number.

It is an amenable number.

658165213 is a deficient number, since it is larger than the sum of its proper divisors (17788287).

658165213 is a wasteful number, since it uses less digits than its factorization.

658165213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17788286.

The product of its digits is 43200, while the sum is 37.

The square root of 658165213 is about 25654.7308112948. The cubic root of 658165213 is about 869.8512155838.

It can be divided in two parts, 658165 and 213, that added together give a triangular number (658378 = T₁₁₄₇).

The spelling of 658165213 in words is "six hundred fifty-eight million, one hundred sixty-five thousand, two hundred thirteen".