64682617 has 2 divisors, whose sum is σ = 64682618. Its totient is φ = 64682616.

The previous prime is 64682609. The next prime is 64682627. The reversal of 64682617 is 71628646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61402896 + 3279721 = 7836^2 + 1811^2 .

It is a cyclic number.

It is not a de Polignac number, because 64682617 - 2³ = 64682609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64682617.

It is not a weakly prime, because it can be changed into another prime (64682627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32341308 + 32341309.

It is an arithmetic number, because the mean of its divisors is an integer number (32341309).

Almost surely, 2^64682617 is an apocalyptic number.

It is an amenable number.

64682617 is a deficient number, since it is larger than the sum of its proper divisors (1).

64682617 is an equidigital number, since it uses as much as digits as its factorization.

64682617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 64682617 is about 8042.5504039453. The cubic root of 64682617 is about 401.4170924439.

The spelling of 64682617 in words is "sixty-four million, six hundred eighty-two thousand, six hundred seventeen".