64283917 has 2 divisors, whose sum is σ = 64283918. Its totient is φ = 64283916.

The previous prime is 64283833. The next prime is 64283957. The reversal of 64283917 is 71938246.

It is an a-pointer prime, because the next prime (64283957) can be obtained adding 64283917 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38365636 + 25918281 = 6194^2 + 5091^2 .

It is a cyclic number.

It is not a de Polignac number, because 64283917 - 2⁷ = 64283789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64283917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64283957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32141958 + 32141959.

It is an arithmetic number, because the mean of its divisors is an integer number (32141959).

Almost surely, 2^64283917 is an apocalyptic number.

It is an amenable number.

64283917 is a deficient number, since it is larger than the sum of its proper divisors (1).

64283917 is an equidigital number, since it uses as much as digits as its factorization.

64283917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 64283917 is about 8017.7251761332. The cubic root of 64283917 is about 400.5906212372.

The spelling of 64283917 in words is "sixty-four million, two hundred eighty-three thousand, nine hundred seventeen".