64666683 has 6 divisors (see below), whose sum is σ = 93407444. Its totient is φ = 43111116.

The previous prime is 64666681. The next prime is 64666727. The reversal of 64666683 is 38666646.

It is not a de Polignac number, because 64666683 - 2¹ = 64666681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64666681) 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 5 ways as a sum of consecutive naturals, for example, 3592585 + ... + 3592602.

Almost surely, 2^64666683 is an apocalyptic number.

64666683 is a deficient number, since it is larger than the sum of its proper divisors (28740761).

64666683 is a wasteful number, since it uses less digits than its factorization.

64666683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7185193 (or 7185190 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 64666683 is about 8041.5597367675. The cubic root of 64666683 is about 401.3841278674.

The spelling of 64666683 in words is "sixty-four million, six hundred sixty-six thousand, six hundred eighty-three".