65622617 has 2 divisors, whose sum is σ = 65622618. Its totient is φ = 65622616.

The previous prime is 65622607. The next prime is 65622619. The reversal of 65622617 is 71622656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64464841 + 1157776 = 8029^2 + 1076^2 .

It is a cyclic number.

It is not a de Polignac number, because 65622617 - 2⁶ = 65622553 is a prime.

Together with 65622619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65622619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32811308 + 32811309.

It is an arithmetic number, because the mean of its divisors is an integer number (32811309).

Almost surely, 2^65622617 is an apocalyptic number.

It is an amenable number.

65622617 is a deficient number, since it is larger than the sum of its proper divisors (1).

65622617 is an equidigital number, since it uses as much as digits as its factorization.

65622617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 65622617 is about 8100.7787897214. The cubic root of 65622617 is about 403.3522791607.

The spelling of 65622617 in words is "sixty-five million, six hundred twenty-two thousand, six hundred seventeen".