64115792 has 20 divisors (see below), whose sum is σ = 133780500. Its totient is φ = 29591808.

The previous prime is 64115771. The next prime is 64115797. The reversal of 64115792 is 29751146.

It can be written as a sum of positive squares in 2 ways, for example, as 7203856 + 56911936 = 2684^2 + 7544^2 .

It is a super-2 number, since 2×64115792² = 8221669567574528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64115797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153917 + ... + 154332.

It is an arithmetic number, because the mean of its divisors is an integer number (6689025).

Almost surely, 2^64115792 is an apocalyptic number.

It is an amenable number.

64115792 is an abundant number, since it is smaller than the sum of its proper divisors (69664708).

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

64115792 is a wasteful number, since it uses less digits than its factorization.

64115792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308270 (or 308264 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 64115792 is about 8007.2337295723. The cubic root of 64115792 is about 400.2410879956.

The spelling of 64115792 in words is "sixty-four million, one hundred fifteen thousand, seven hundred ninety-two".