64839371 has 2 divisors, whose sum is σ = 64839372. Its totient is φ = 64839370.

The previous prime is 64839353. The next prime is 64839373. The reversal of 64839371 is 17393846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64839371 - 2¹⁴ = 64822987 is a prime.

Together with 64839373, 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 (64839373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32419685 + 32419686.

It is an arithmetic number, because the mean of its divisors is an integer number (32419686).

Almost surely, 2^64839371 is an apocalyptic number.

64839371 is a deficient number, since it is larger than the sum of its proper divisors (1).

64839371 is an equidigital number, since it uses as much as digits as its factorization.

64839371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 64839371 is about 8052.2897985604. The cubic root of 64839371 is about 401.7411000143.

The spelling of 64839371 in words is "sixty-four million, eight hundred thirty-nine thousand, three hundred seventy-one".