64324839 has 16 divisors (see below), whose sum is σ = 87609600. Its totient is φ = 41971776.

The previous prime is 64324837. The next prime is 64324847. The reversal of 64324839 is 93842346.

It is not a de Polignac number, because 64324839 - 2¹ = 64324837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64324797 and 64324806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64324837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26332 + ... + 28670.

It is an arithmetic number, because the mean of its divisors is an integer number (5475600).

Almost surely, 2^64324839 is an apocalyptic number.

64324839 is a deficient number, since it is larger than the sum of its proper divisors (23284761).

64324839 is a wasteful number, since it uses less digits than its factorization.

64324839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534.

The product of its digits is 124416, while the sum is 39.

The square root of 64324839 is about 8020.2767408613. The cubic root of 64324839 is about 400.6756061650.

The spelling of 64324839 in words is "sixty-four million, three hundred twenty-four thousand, eight hundred thirty-nine".