64503265 has 8 divisors (see below), whose sum is σ = 77576040. Its totient is φ = 51487872.

The previous prime is 64503251. The next prime is 64503277. The reversal of 64503265 is 56230546.

It can be written as a sum of positive squares in 4 ways, for example, as 2676496 + 61826769 = 1636^2 + 7863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64503265 - 2⁷ = 64503137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11830 + ... + 16399.

It is an arithmetic number, because the mean of its divisors is an integer number (9697005).

Almost surely, 2^64503265 is an apocalyptic number.

It is an amenable number.

64503265 is a deficient number, since it is larger than the sum of its proper divisors (13072775).

64503265 is a wasteful number, since it uses less digits than its factorization.

64503265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28691.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 64503265 is about 8031.3924695535. The cubic root of 64503265 is about 401.0457324765.

The spelling of 64503265 in words is "sixty-four million, five hundred three thousand, two hundred sixty-five".