64825939 has 4 divisors (see below), whose sum is σ = 64880424. Its totient is φ = 64771456.

The previous prime is 64825903. The next prime is 64825951. The reversal of 64825939 is 93952846.

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

It is a cyclic number.

It is not a de Polignac number, because 64825939 - 2⁹ = 64825427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64825039) 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, 25417 + ... + 27850.

It is an arithmetic number, because the mean of its divisors is an integer number (16220106).

Almost surely, 2^64825939 is an apocalyptic number.

64825939 is a deficient number, since it is larger than the sum of its proper divisors (54485).

64825939 is a wasteful number, since it uses less digits than its factorization.

64825939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54484.

The product of its digits is 466560, while the sum is 46.

The square root of 64825939 is about 8051.4557068893. The cubic root of 64825939 is about 401.7133567927.

It can be divided in two parts, 6482 and 5939, that added together give a palindrome (12421).

The spelling of 64825939 in words is "sixty-four million, eight hundred twenty-five thousand, nine hundred thirty-nine".