165624213 has 8 divisors (see below), whose sum is σ = 222787008. Its totient is φ = 109438784.

The previous prime is 165624203. The next prime is 165624223. The reversal of 165624213 is 312426561.

It is an interprime number because it is at equal distance from previous prime (165624203) and next prime (165624223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165624213 - 2⁸ = 165623957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165624203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243945 + ... + 244622.

It is an arithmetic number, because the mean of its divisors is an integer number (27848376).

Almost surely, 2^165624213 is an apocalyptic number.

It is an amenable number.

165624213 is a deficient number, since it is larger than the sum of its proper divisors (57162795).

165624213 is a wasteful number, since it uses less digits than its factorization.

165624213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488683.

The product of its digits is 8640, while the sum is 30.

The square root of 165624213 is about 12869.5071001185. The cubic root of 165624213 is about 549.1714389219.

The spelling of 165624213 in words is "one hundred sixty-five million, six hundred twenty-four thousand, two hundred thirteen".