64339571 has 2 divisors, whose sum is σ = 64339572. Its totient is φ = 64339570.

The previous prime is 64339553. The next prime is 64339573. The reversal of 64339571 is 17593346.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64339571 - 2¹⁴ = 64323187 is a prime.

Together with 64339573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64339573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32169785 + 32169786.

It is an arithmetic number, because the mean of its divisors is an integer number (32169786).

Almost surely, 2^64339571 is an apocalyptic number.

64339571 is a deficient number, since it is larger than the sum of its proper divisors (1).

64339571 is an equidigital number, since it uses as much as digits as its factorization.

64339571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 38.

The square root of 64339571 is about 8021.1951104558. The cubic root of 64339571 is about 400.7061920815.

The spelling of 64339571 in words is "sixty-four million, three hundred thirty-nine thousand, five hundred seventy-one".