64838799 has 20 divisors (see below), whose sum is σ = 102557664. Its totient is φ = 40682304.

The previous prime is 64838789. The next prime is 64838801. The reversal of 64838799 is 99783846.

It is not a de Polignac number, because 64838799 - 2¹⁶ = 64773263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64838729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22167 + ... + 24920.

Almost surely, 2^64838799 is an apocalyptic number.

64838799 is a deficient number, since it is larger than the sum of its proper divisors (37718865).

64838799 is a wasteful number, since it uses less digits than its factorization.

64838799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47116 (or 47107 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 64838799 is about 8052.2542806347. The cubic root of 64838799 is about 401.7399186509.

The spelling of 64838799 in words is "sixty-four million, eight hundred thirty-eight thousand, seven hundred ninety-nine".