64334005 has 4 divisors (see below), whose sum is σ = 77200812. Its totient is φ = 51467200.

The previous prime is 64333993. The next prime is 64334027. The reversal of 64334005 is 50043346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50043346 = 2 ⋅25021673.

It can be written as a sum of positive squares in 2 ways, for example, as 30902481 + 33431524 = 5559^2 + 5782^2 .

It is not a de Polignac number, because 64334005 - 2¹¹ = 64331957 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 3 ways as a sum of consecutive naturals, for example, 6433396 + ... + 6433405.

It is an arithmetic number, because the mean of its divisors is an integer number (19300203).

Almost surely, 2^64334005 is an apocalyptic number.

It is an amenable number.

64334005 is a deficient number, since it is larger than the sum of its proper divisors (12866807).

64334005 is a wasteful number, since it uses less digits than its factorization.

64334005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12866806.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 64334005 is about 8020.8481471725. The cubic root of 64334005 is about 400.6946367512.

The spelling of 64334005 in words is "sixty-four million, three hundred thirty-four thousand, five".