64020117 has 24 divisors (see below), whose sum is σ = 99727200. Its totient is φ = 36424416.

The previous prime is 64020083. The next prime is 64020119. The reversal of 64020117 is 71102046.

It is not a de Polignac number, because 64020117 - 2¹⁵ = 63987349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 64020093 and 64020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64020119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38734 + ... + 40352.

It is an arithmetic number, because the mean of its divisors is an integer number (4155300).

Almost surely, 2^64020117 is an apocalyptic number.

It is an amenable number.

64020117 is a deficient number, since it is larger than the sum of its proper divisors (35707083).

64020117 is a wasteful number, since it uses less digits than its factorization.

64020117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 64020117 is about 8001.2572137134. The cubic root of 64020117 is about 400.0419060262.

The spelling of 64020117 in words is "sixty-four million, twenty thousand, one hundred seventeen".