172396613 has 2 divisors, whose sum is σ = 172396614. Its totient is φ = 172396612.

The previous prime is 172396607. The next prime is 172396621. The reversal of 172396613 is 316693271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170903329 + 1493284 = 13073^2 + 1222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172396613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172396013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86198306 + 86198307.

It is an arithmetic number, because the mean of its divisors is an integer number (86198307).

Almost surely, 2^172396613 is an apocalyptic number.

It is an amenable number.

172396613 is a deficient number, since it is larger than the sum of its proper divisors (1).

172396613 is an equidigital number, since it uses as much as digits as its factorization.

172396613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 172396613 is about 13129.9890708256. The cubic root of 172396613 is about 556.5569064594.

The spelling of 172396613 in words is "one hundred seventy-two million, three hundred ninety-six thousand, six hundred thirteen".