64112065 has 4 divisors (see below), whose sum is σ = 76934484. Its totient is φ = 51289648.

The previous prime is 64112021. The next prime is 64112071. The reversal of 64112065 is 56021146.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23049601 + 41062464 = 4801^2 + 6408^2 .

It is a cyclic number.

It is not a de Polignac number, because 64112065 - 2¹¹ = 64110017 is a prime.

It is a super-2 number, since 2×64112065² = 8220713757128450, which contains 22 as substring.

It is a Duffinian 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, 6411202 + ... + 6411211.

It is an arithmetic number, because the mean of its divisors is an integer number (19233621).

Almost surely, 2^64112065 is an apocalyptic number.

It is an amenable number.

64112065 is a deficient number, since it is larger than the sum of its proper divisors (12822419).

64112065 is a wasteful number, since it uses less digits than its factorization.

64112065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822418.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 64112065 is about 8007.0009991257. Note that the first 3 decimals coincide. The cubic root of 64112065 is about 400.2333326133.

The spelling of 64112065 in words is "sixty-four million, one hundred twelve thousand, sixty-five".