5709666 has 24 divisors (see below), whose sum is σ = 11705040. Its totient is φ = 1856232.

The previous prime is 5709659. The next prime is 5709667. The reversal of 5709666 is 6669075.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5709667) 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 11 ways as a sum of consecutive naturals, for example, 44895 + ... + 45021.

It is an arithmetic number, because the mean of its divisors is an integer number (487710).

Almost surely, 2^5709666 is an apocalyptic number.

5709666 is an abundant number, since it is smaller than the sum of its proper divisors (5995374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5709666 is a wasteful number, since it uses less digits than its factorization.

5709666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 5709666 is about 2389.4907407228. The cubic root of 5709666 is about 178.7325156093.

The spelling of 5709666 in words is "five million, seven hundred nine thousand, six hundred sixty-six".