64464217 has 2 divisors, whose sum is σ = 64464218. Its totient is φ = 64464216.

The previous prime is 64464209. The next prime is 64464223. The reversal of 64464217 is 71246446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59428681 + 5035536 = 7709^2 + 2244^2 .

It is a cyclic number.

It is not a de Polignac number, because 64464217 - 2³ = 64464209 is a prime.

It is not a weakly prime, because it can be changed into another prime (64464247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32232108 + 32232109.

It is an arithmetic number, because the mean of its divisors is an integer number (32232109).

Almost surely, 2^64464217 is an apocalyptic number.

It is an amenable number.

64464217 is a deficient number, since it is larger than the sum of its proper divisors (1).

64464217 is an equidigital number, since it uses as much as digits as its factorization.

64464217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 34.

The square root of 64464217 is about 8028.9611407703. The cubic root of 64464217 is about 400.9647898305.

The spelling of 64464217 in words is "sixty-four million, four hundred sixty-four thousand, two hundred seventeen".