64564065 has 12 divisors (see below), whose sum is σ = 111911124. Its totient is φ = 34434144.

The previous prime is 64564057. The next prime is 64564091. The reversal of 64564065 is 56046546.

It is a happy number.

64564065 is a `hidden beast` number, since 6 + 4 + 5 + 640 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35533521 + 29030544 = 5961^2 + 5388^2 .

It is not a de Polignac number, because 64564065 - 2³ = 64564057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717334 + ... + 717423.

It is an arithmetic number, because the mean of its divisors is an integer number (9325927).

Almost surely, 2^64564065 is an apocalyptic number.

It is an amenable number.

64564065 is a deficient number, since it is larger than the sum of its proper divisors (47347059).

64564065 is a wasteful number, since it uses less digits than its factorization.

64564065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434768 (or 1434765 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 64564065 is about 8035.1767248767. The cubic root of 64564065 is about 401.1716998640.

The spelling of 64564065 in words is "sixty-four million, five hundred sixty-four thousand, sixty-five".