64792839 has 4 divisors (see below), whose sum is σ = 86390456. Its totient is φ = 43195224.

The previous prime is 64792811. The next prime is 64792843. The reversal of 64792839 is 93829746.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64792839 - 2¹² = 64788743 is a prime.

It is a super-2 number, since 2×64792839² = 8396223971359842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64792339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10798804 + ... + 10798809.

It is an arithmetic number, because the mean of its divisors is an integer number (21597614).

Almost surely, 2^64792839 is an apocalyptic number.

64792839 is a deficient number, since it is larger than the sum of its proper divisors (21597617).

64792839 is a wasteful number, since it uses less digits than its factorization.

64792839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21597616.

The product of its digits is 653184, while the sum is 48.

The square root of 64792839 is about 8049.3999155217. The cubic root of 64792839 is about 401.6449737964.

The spelling of 64792839 in words is "sixty-four million, seven hundred ninety-two thousand, eight hundred thirty-nine".