164625613 has 2 divisors, whose sum is σ = 164625614. Its totient is φ = 164625612.

The previous prime is 164625607. The next prime is 164625661. The reversal of 164625613 is 316526461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83229129 + 81396484 = 9123^2 + 9022^2 .

It is a cyclic number.

It is not a de Polignac number, because 164625613 - 2¹⁷ = 164494541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164625683) 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 as a sum of consecutive naturals, namely, 82312806 + 82312807.

It is an arithmetic number, because the mean of its divisors is an integer number (82312807).

Almost surely, 2^164625613 is an apocalyptic number.

It is an amenable number.

164625613 is a deficient number, since it is larger than the sum of its proper divisors (1).

164625613 is an equidigital number, since it uses as much as digits as its factorization.

164625613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 164625613 is about 12830.6513084878. The cubic root of 164625613 is about 548.0655046725.

The spelling of 164625613 in words is "one hundred sixty-four million, six hundred twenty-five thousand, six hundred thirteen".