64165838 has 8 divisors (see below), whose sum is σ = 104998680. Its totient is φ = 29166280.

The previous prime is 64165819. The next prime is 64165853. The reversal of 64165838 is 83856146.

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

It is a junction number, because it is equal to n+sod(n) for n = 64165795 and 64165804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458293 + ... + 1458336.

It is an arithmetic number, because the mean of its divisors is an integer number (13124835).

Almost surely, 2^64165838 is an apocalyptic number.

64165838 is a deficient number, since it is larger than the sum of its proper divisors (40832842).

64165838 is a wasteful number, since it uses less digits than its factorization.

64165838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916642.

The product of its digits is 138240, while the sum is 41.

The square root of 64165838 is about 8010.3581692706. The cubic root of 64165838 is about 400.3451978438.

The spelling of 64165838 in words is "sixty-four million, one hundred sixty-five thousand, eight hundred thirty-eight".