64085135 has 4 divisors (see below), whose sum is σ = 76902168. Its totient is φ = 51268104.

The previous prime is 64085123. The next prime is 64085137. The reversal of 64085135 is 53158046.

It is a happy number.

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 64085135 - 2¹⁸ = 63822991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64085137) 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, 6408509 + ... + 6408518.

It is an arithmetic number, because the mean of its divisors is an integer number (19225542).

Almost surely, 2^64085135 is an apocalyptic number.

64085135 is a deficient number, since it is larger than the sum of its proper divisors (12817033).

64085135 is a wasteful number, since it uses less digits than its factorization.

64085135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12817032.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 64085135 is about 8005.3191691525. The cubic root of 64085135 is about 400.1772859959.

The spelling of 64085135 in words is "sixty-four million, eighty-five thousand, one hundred thirty-five".