64136898 has 24 divisors (see below), whose sum is σ = 158815488. Its totient is φ = 18324792.

The previous prime is 64136887. The next prime is 64136899. The reversal of 64136898 is 89863146.

64136898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64136898² = 8227083370124808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64136899) 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 11 ways as a sum of consecutive naturals, for example, 254386 + ... + 254637.

It is an arithmetic number, because the mean of its divisors is an integer number (6617312).

Almost surely, 2^64136898 is an apocalyptic number.

64136898 is an abundant number, since it is smaller than the sum of its proper divisors (94678590).

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

64136898 is a wasteful number, since it uses less digits than its factorization.

64136898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509038 (or 509035 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 64136898 is about 8008.5515544323. The cubic root of 64136898 is about 400.2850010544.

The spelling of 64136898 in words is "sixty-four million, one hundred thirty-six thousand, eight hundred ninety-eight".