64652239 has 2 divisors, whose sum is σ = 64652240. Its totient is φ = 64652238.

The previous prime is 64652219. The next prime is 64652243. The reversal of 64652239 is 93225646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64652239 - 2⁷ = 64652111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64652198 and 64652207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64652219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32326119 + 32326120.

It is an arithmetic number, because the mean of its divisors is an integer number (32326120).

Almost surely, 2^64652239 is an apocalyptic number.

64652239 is a deficient number, since it is larger than the sum of its proper divisors (1).

64652239 is an equidigital number, since it uses as much as digits as its factorization.

64652239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 64652239 is about 8040.6616021320. The cubic root of 64652239 is about 401.3542411530.

The spelling of 64652239 in words is "sixty-four million, six hundred fifty-two thousand, two hundred thirty-nine".