64253617 has 2 divisors, whose sum is σ = 64253618. Its totient is φ = 64253616.

The previous prime is 64253599. The next prime is 64253621. The reversal of 64253617 is 71635246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63377521 + 876096 = 7961^2 + 936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64253617 is a prime.

It is not a weakly prime, because it can be changed into another prime (64253017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32126808 + 32126809.

It is an arithmetic number, because the mean of its divisors is an integer number (32126809).

Almost surely, 2^64253617 is an apocalyptic number.

It is an amenable number.

64253617 is a deficient number, since it is larger than the sum of its proper divisors (1).

64253617 is an equidigital number, since it uses as much as digits as its factorization.

64253617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 64253617 is about 8015.8353900264. The cubic root of 64253617 is about 400.5276723486.

The spelling of 64253617 in words is "sixty-four million, two hundred fifty-three thousand, six hundred seventeen".