64520338 has 16 divisors (see below), whose sum is σ = 102645144. Its totient is φ = 30311680.

The previous prime is 64520317. The next prime is 64520353. The reversal of 64520338 is 83302546.

It can be written as a sum of positive squares in 4 ways, for example, as 42081169 + 22439169 = 6487^2 + 4737^2 .

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, 25908 + ... + 28288.

Almost surely, 2^64520338 is an apocalyptic number.

64520338 is a deficient number, since it is larger than the sum of its proper divisors (38124806).

64520338 is a wasteful number, since it uses less digits than its factorization.

64520338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 64520338 is about 8032.4552908809. The cubic root of 64520338 is about 401.0811128550.

The spelling of 64520338 in words is "sixty-four million, five hundred twenty thousand, three hundred thirty-eight".