64113838 has 16 divisors (see below), whose sum is σ = 99953280. Its totient is φ = 30806496.

The previous prime is 64113821. The next prime is 64113839. The reversal of 64113838 is 83831146.

It is a super-2 number, since 2×64113838² = 8221168446180488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64113839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10456 + ... + 15412.

It is an arithmetic number, because the mean of its divisors is an integer number (6247080).

Almost surely, 2^64113838 is an apocalyptic number.

64113838 is a deficient number, since it is larger than the sum of its proper divisors (35839442).

64113838 is a wasteful number, since it uses less digits than its factorization.

64113838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211.

The product of its digits is 13824, while the sum is 34.

The square root of 64113838 is about 8007.1117139703. Note that the first 3 decimals coincide. The cubic root of 64113838 is about 400.2370220237.

The spelling of 64113838 in words is "sixty-four million, one hundred thirteen thousand, eight hundred thirty-eight".