64968859 has 4 divisors (see below), whose sum is σ = 67793616. Its totient is φ = 62144104.

The previous prime is 64968857. The next prime is 64968863. The reversal of 64968859 is 95886946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64968859 - 2¹ = 64968857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64968857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412344 + ... + 1412389.

It is an arithmetic number, because the mean of its divisors is an integer number (16948404).

Almost surely, 2^64968859 is an apocalyptic number.

64968859 is a deficient number, since it is larger than the sum of its proper divisors (2824757).

64968859 is a wasteful number, since it uses less digits than its factorization.

64968859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824756.

The product of its digits is 3732480, while the sum is 55.

The square root of 64968859 is about 8060.3262340925. The cubic root of 64968859 is about 402.0083556426.

The spelling of 64968859 in words is "sixty-four million, nine hundred sixty-eight thousand, eight hundred fifty-nine".