64855508 has 12 divisors (see below), whose sum is σ = 113785812. Its totient is φ = 32345280.

The previous prime is 64855501. The next prime is 64855523. The reversal of 64855508 is 80555846.

It can be written as a sum of positive squares in 2 ways, for example, as 52591504 + 12264004 = 7252^2 + 3502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64855501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18833 + ... + 22008.

It is an arithmetic number, because the mean of its divisors is an integer number (9482151).

Almost surely, 2^64855508 is an apocalyptic number.

It is an amenable number.

64855508 is a deficient number, since it is larger than the sum of its proper divisors (48930304).

64855508 is a wasteful number, since it uses less digits than its factorization.

64855508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41242 (or 41240 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 41.

The square root of 64855508 is about 8053.2917493408. The cubic root of 64855508 is about 401.7744252316.

The spelling of 64855508 in words is "sixty-four million, eight hundred fifty-five thousand, five hundred eight".