64198417 has 2 divisors, whose sum is σ = 64198418. Its totient is φ = 64198416.

The previous prime is 64198411. The next prime is 64198447. The reversal of 64198417 is 71489146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 20757136 = 6591^2 + 4556^2 .

It is a cyclic number.

It is not a de Polignac number, because 64198417 - 2¹⁵ = 64165649 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64198417.

It is not a weakly prime, because it can be changed into another prime (64198411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32099208 + 32099209.

It is an arithmetic number, because the mean of its divisors is an integer number (32099209).

Almost surely, 2^64198417 is an apocalyptic number.

It is an amenable number.

64198417 is a deficient number, since it is larger than the sum of its proper divisors (1).

64198417 is an equidigital number, since it uses as much as digits as its factorization.

64198417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 64198417 is about 8012.3914657236. The cubic root of 64198417 is about 400.4129422999.

The spelling of 64198417 in words is "sixty-four million, one hundred ninety-eight thousand, four hundred seventeen".