172613407 has 2 divisors, whose sum is σ = 172613408. Its totient is φ = 172613406.

The previous prime is 172613387. The next prime is 172613431. The reversal of 172613407 is 704316271.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172613407 is a prime.

It is a super-2 number, since 2×172613407² = 59590776552295298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172619407) 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 as a sum of consecutive naturals, namely, 86306703 + 86306704.

It is an arithmetic number, because the mean of its divisors is an integer number (86306704).

Almost surely, 2^172613407 is an apocalyptic number.

172613407 is a deficient number, since it is larger than the sum of its proper divisors (1).

172613407 is an equidigital number, since it uses as much as digits as its factorization.

172613407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 172613407 is about 13138.2421579144. The cubic root of 172613407 is about 556.7901044983.

Adding to 172613407 its reverse (704316271), we get a palindrome (876929678).

The spelling of 172613407 in words is "one hundred seventy-two million, six hundred thirteen thousand, four hundred seven".