64006659 has 16 divisors (see below), whose sum is σ = 94955040. Its totient is φ = 42612480.

The previous prime is 64006637. The next prime is 64006673. The reversal of 64006659 is 95660046.

It is a happy number.

64006659 is a `hidden beast` number, since 640 + 0 + 6 + 6 + 5 + 9 = 666.

It is not a de Polignac number, because 64006659 - 2⁵ = 64006627 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64006259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28539 + ... + 30699.

It is an arithmetic number, because the mean of its divisors is an integer number (5934690).

Almost surely, 2^64006659 is an apocalyptic number.

64006659 is a deficient number, since it is larger than the sum of its proper divisors (30948381).

64006659 is a wasteful number, since it uses less digits than its factorization.

64006659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267 (or 3261 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 64006659 is about 8000.4161766748. The cubic root of 64006659 is about 400.0138724355.

The spelling of 64006659 in words is "sixty-four million, six thousand, six hundred fifty-nine".