64567265 has 16 divisors (see below), whose sum is σ = 91407360. Its totient is φ = 42845760.

The previous prime is 64567249. The next prime is 64567267. The reversal of 64567265 is 56276546.

It is not a de Polignac number, because 64567265 - 2⁴ = 64567249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64567267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28670 + ... + 30839.

It is an arithmetic number, because the mean of its divisors is an integer number (5712960).

Almost surely, 2^64567265 is an apocalyptic number.

It is an amenable number.

64567265 is a deficient number, since it is larger than the sum of its proper divisors (26840095).

64567265 is a wasteful number, since it uses less digits than its factorization.

64567265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59552.

The product of its digits is 302400, while the sum is 41.

The square root of 64567265 is about 8035.3758468413. The cubic root of 64567265 is about 401.1783275354.

The spelling of 64567265 in words is "sixty-four million, five hundred sixty-seven thousand, two hundred sixty-five".