64839695 has 16 divisors (see below), whose sum is σ = 79248672. Its totient is φ = 50918400.

The previous prime is 64839689. The next prime is 64839713. The reversal of 64839695 is 59693846.

It is not a de Polignac number, because 64839695 - 2¹² = 64835599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146144 + ... + 146586.

It is an arithmetic number, because the mean of its divisors is an integer number (4953042).

Almost surely, 2^64839695 is an apocalyptic number.

64839695 is a deficient number, since it is larger than the sum of its proper divisors (14408977).

64839695 is a wasteful number, since it uses less digits than its factorization.

64839695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922.

The product of its digits is 1399680, while the sum is 50.

The square root of 64839695 is about 8052.3099170362. The cubic root of 64839695 is about 401.7417691751.

The spelling of 64839695 in words is "sixty-four million, eight hundred thirty-nine thousand, six hundred ninety-five".