64396571 has 2 divisors, whose sum is σ = 64396572. Its totient is φ = 64396570.

The previous prime is 64396543. The next prime is 64396583. The reversal of 64396571 is 17569346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64396571 - 2¹⁰ = 64395547 is a prime.

It is not a weakly prime, because it can be changed into another prime (64396511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32198285 + 32198286.

It is an arithmetic number, because the mean of its divisors is an integer number (32198286).

Almost surely, 2^64396571 is an apocalyptic number.

64396571 is a deficient number, since it is larger than the sum of its proper divisors (1).

64396571 is an equidigital number, since it uses as much as digits as its factorization.

64396571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 64396571 is about 8024.7474103550. The cubic root of 64396571 is about 400.8244889606.

The spelling of 64396571 in words is "sixty-four million, three hundred ninety-six thousand, five hundred seventy-one".