64427017 has 2 divisors, whose sum is σ = 64427018. Its totient is φ = 64427016.

The previous prime is 64427003. The next prime is 64427023. The reversal of 64427017 is 71072446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61402896 + 3024121 = 7836^2 + 1739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64427017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64427017.

It is not a weakly prime, because it can be changed into another prime (64427047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32213508 + 32213509.

It is an arithmetic number, because the mean of its divisors is an integer number (32213509).

Almost surely, 2^64427017 is an apocalyptic number.

It is an amenable number.

64427017 is a deficient number, since it is larger than the sum of its proper divisors (1).

64427017 is an equidigital number, since it uses as much as digits as its factorization.

64427017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 64427017 is about 8026.6441929364. The cubic root of 64427017 is about 400.8876474977.

The spelling of 64427017 in words is "sixty-four million, four hundred twenty-seven thousand, seventeen".