64244671 has 2 divisors, whose sum is σ = 64244672. Its totient is φ = 64244670.

The previous prime is 64244633. The next prime is 64244689. The reversal of 64244671 is 17644246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64244671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64244371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32122335 + 32122336.

It is an arithmetic number, because the mean of its divisors is an integer number (32122336).

Almost surely, 2^64244671 is an apocalyptic number.

64244671 is a deficient number, since it is larger than the sum of its proper divisors (1).

64244671 is an equidigital number, since it uses as much as digits as its factorization.

64244671 is an odious number, because the sum of its binary digits is odd.

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

The square root of 64244671 is about 8015.2773501608. The cubic root of 64244671 is about 400.5090830612.

The spelling of 64244671 in words is "sixty-four million, two hundred forty-four thousand, six hundred seventy-one".