64254239 has 6 divisors (see below), whose sum is σ = 74744784. Its totient is φ = 55075020.

The previous prime is 64254221. The next prime is 64254251. The reversal of 64254239 is 93245246.

It is a de Polignac number, because none of the positive numbers 2^k-64254239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64254199 and 64254208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64254259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 655607 + ... + 655704.

It is an arithmetic number, because the mean of its divisors is an integer number (12457464).

Almost surely, 2^64254239 is an apocalyptic number.

64254239 is a deficient number, since it is larger than the sum of its proper divisors (10490545).

64254239 is a wasteful number, since it uses less digits than its factorization.

64254239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311325 (or 1311318 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 64254239 is about 8015.8741881344. The cubic root of 64254239 is about 400.5289647657.

The spelling of 64254239 in words is "sixty-four million, two hundred fifty-four thousand, two hundred thirty-nine".