64224917 has 2 divisors, whose sum is σ = 64224918. Its totient is φ = 64224916.

The previous prime is 64224913. The next prime is 64224949. The reversal of 64224917 is 71942246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64096036 + 128881 = 8006^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 64224917 - 2² = 64224913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64224913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32112458 + 32112459.

It is an arithmetic number, because the mean of its divisors is an integer number (32112459).

Almost surely, 2^64224917 is an apocalyptic number.

It is an amenable number.

64224917 is a deficient number, since it is larger than the sum of its proper divisors (1).

64224917 is an equidigital number, since it uses as much as digits as its factorization.

64224917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 64224917 is about 8014.0449836521. The cubic root of 64224917 is about 400.4680292413.

The spelling of 64224917 in words is "sixty-four million, two hundred twenty-four thousand, nine hundred seventeen".