64663683 has 24 divisors (see below), whose sum is σ = 102750480. Its totient is φ = 36046080.

The previous prime is 64663673. The next prime is 64663759. The reversal of 64663683 is 38636646.

64663683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64663683 - 2⁴ = 64663667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64663663) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 663 + ... + 11391.

It is an arithmetic number, because the mean of its divisors is an integer number (4281270).

Almost surely, 2^64663683 is an apocalyptic number.

64663683 is a deficient number, since it is larger than the sum of its proper divisors (38086797).

64663683 is a wasteful number, since it uses less digits than its factorization.

64663683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10787 (or 10780 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 64663683 is about 8041.3732036264. The cubic root of 64663683 is about 401.3779208019.

The spelling of 64663683 in words is "sixty-four million, six hundred sixty-three thousand, six hundred eighty-three".