64873265 has 4 divisors (see below), whose sum is σ = 77847924. Its totient is φ = 51898608.

The previous prime is 64873243. The next prime is 64873267. The reversal of 64873265 is 56237846.

It is a happy number.

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 37957921 + 26915344 = 6161^2 + 5188^2 .

It is a cyclic number.

It is not a de Polignac number, because 64873265 - 2⁸ = 64873009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64873267) 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, 6487322 + ... + 6487331.

It is an arithmetic number, because the mean of its divisors is an integer number (19461981).

Almost surely, 2^64873265 is an apocalyptic number.

It is an amenable number.

64873265 is a deficient number, since it is larger than the sum of its proper divisors (12974659).

64873265 is a wasteful number, since it uses less digits than its factorization.

64873265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12974658.

The product of its digits is 241920, while the sum is 41.

The square root of 64873265 is about 8054.3941423300. The cubic root of 64873265 is about 401.8110895936.

The spelling of 64873265 in words is "sixty-four million, eight hundred seventy-three thousand, two hundred sixty-five".