5639766 has 16 divisors (see below), whose sum is σ = 12305088. Its totient is φ = 1709000.

The previous prime is 5639759. The next prime is 5639773. The reversal of 5639766 is 6679365.

It is an interprime number because it is at equal distance from previous prime (5639759) and next prime (5639773).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42660 + ... + 42791.

It is an arithmetic number, because the mean of its divisors is an integer number (769068).

Almost surely, 2^5639766 is an apocalyptic number.

5639766 is an abundant number, since it is smaller than the sum of its proper divisors (6665322).

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

5639766 is a wasteful number, since it uses less digits than its factorization.

5639766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85467.

The product of its digits is 204120, while the sum is 42.

The square root of 5639766 is about 2374.8191510092. The cubic root of 5639766 is about 178.0001472877. Note that the first 3 decimals are identical.

The spelling of 5639766 in words is "five million, six hundred thirty-nine thousand, seven hundred sixty-six".