64113987 has 16 divisors (see below), whose sum is σ = 103444992. Its totient is φ = 34481280.

The previous prime is 64113979. The next prime is 64113991. The reversal of 64113987 is 78931146.

64113987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64113987 - 2³ = 64113979 is a prime.

It is a super-2 number, since 2×64113987² = 8221206658072338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64113997) 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 15 ways as a sum of consecutive naturals, for example, 89439 + ... + 90152.

It is an arithmetic number, because the mean of its divisors is an integer number (6465312).

Almost surely, 2^64113987 is an apocalyptic number.

64113987 is a deficient number, since it is larger than the sum of its proper divisors (39331005).

64113987 is a wasteful number, since it uses less digits than its factorization.

64113987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179618.

The product of its digits is 36288, while the sum is 39.

The square root of 64113987 is about 8007.1210181937. The cubic root of 64113987 is about 400.2373320725.

The spelling of 64113987 in words is "sixty-four million, one hundred thirteen thousand, nine hundred eighty-seven".