64115866 has 8 divisors (see below), whose sum is σ = 96208704. Its totient is φ = 32046300.

The previous prime is 64115803. The next prime is 64115879. The reversal of 64115866 is 66851146.

64115866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64115866² = 8221688545859912, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5391 + ... + 12541.

It is an arithmetic number, because the mean of its divisors is an integer number (12026088).

Almost surely, 2^64115866 is an apocalyptic number.

64115866 is a deficient number, since it is larger than the sum of its proper divisors (32092838).

64115866 is a wasteful number, since it uses less digits than its factorization.

64115866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11636.

The product of its digits is 34560, while the sum is 37.

The square root of 64115866 is about 8007.2383503927. The cubic root of 64115866 is about 400.2412419765.

The spelling of 64115866 in words is "sixty-four million, one hundred fifteen thousand, eight hundred sixty-six".