64897888 has 24 divisors (see below), whose sum is σ = 139383720. Its totient is φ = 29498880.

The previous prime is 64897883. The next prime is 64897909. The reversal of 64897888 is 88879846.

64897888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64897883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91833 + ... + 92536.

It is an arithmetic number, because the mean of its divisors is an integer number (5807655).

Almost surely, 2^64897888 is an apocalyptic number.

It is an amenable number.

64897888 is an abundant number, since it is smaller than the sum of its proper divisors (74485832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64897888 is a wasteful number, since it uses less digits than its factorization.

64897888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184390 (or 184382 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 58.

The square root of 64897888 is about 8055.9225418322. The cubic root of 64897888 is about 401.8619196902.

The spelling of 64897888 in words is "sixty-four million, eight hundred ninety-seven thousand, eight hundred eighty-eight".