64614217 has 2 divisors, whose sum is σ = 64614218. Its totient is φ = 64614216.

The previous prime is 64614211. The next prime is 64614239. The reversal of 64614217 is 71241646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52649536 + 11964681 = 7256^2 + 3459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64614217 is a prime.

It is not a weakly prime, because it can be changed into another prime (64614211) 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, 32307108 + 32307109.

It is an arithmetic number, because the mean of its divisors is an integer number (32307109).

Almost surely, 2^64614217 is an apocalyptic number.

It is an amenable number.

64614217 is a deficient number, since it is larger than the sum of its proper divisors (1).

64614217 is an equidigital number, since it uses as much as digits as its factorization.

64614217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 64614217 is about 8038.2968967313. The cubic root of 64614217 is about 401.2755468768.

The spelling of 64614217 in words is "sixty-four million, six hundred fourteen thousand, two hundred seventeen".