72626717 has 2 divisors, whose sum is σ = 72626718. Its totient is φ = 72626716.

The previous prime is 72626711. The next prime is 72626747. The reversal of 72626717 is 71762627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69039481 + 3587236 = 8309^2 + 1894^2 .

It is a cyclic number.

It is not a de Polignac number, because 72626717 - 2⁸ = 72626461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72626711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36313358 + 36313359.

It is an arithmetic number, because the mean of its divisors is an integer number (36313359).

Almost surely, 2^72626717 is an apocalyptic number.

It is an amenable number.

72626717 is a deficient number, since it is larger than the sum of its proper divisors (1).

72626717 is an equidigital number, since it uses as much as digits as its factorization.

72626717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 38.

The square root of 72626717 is about 8522.1310128395. The cubic root of 72626717 is about 417.2203383663.

The spelling of 72626717 in words is "seventy-two million, six hundred twenty-six thousand, seven hundred seventeen".