64610971 has 2 divisors, whose sum is σ = 64610972. Its totient is φ = 64610970.

The previous prime is 64610941. The next prime is 64610977. The reversal of 64610971 is 17901646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64610971 - 2¹¹ = 64608923 is a prime.

It is not a weakly prime, because it can be changed into another prime (64610977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32305485 + 32305486.

It is an arithmetic number, because the mean of its divisors is an integer number (32305486).

Almost surely, 2^64610971 is an apocalyptic number.

64610971 is a deficient number, since it is larger than the sum of its proper divisors (1).

64610971 is an equidigital number, since it uses as much as digits as its factorization.

64610971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 64610971 is about 8038.0949857538. The cubic root of 64610971 is about 401.2688271883.

The spelling of 64610971 in words is "sixty-four million, six hundred ten thousand, nine hundred seventy-one".