5639765 has 16 divisors (see below), whose sum is σ = 7008768. Its totient is φ = 4354176.

The previous prime is 5639759. The next prime is 5639773. The reversal of 5639765 is 5679365.

It is a cyclic number.

It is not a de Polignac number, because 5639765 - 2⁴ = 5639749 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 24089 + ... + 24321.

It is an arithmetic number, because the mean of its divisors is an integer number (438048).

Almost surely, 2^5639765 is an apocalyptic number.

It is an amenable number.

5639765 is a deficient number, since it is larger than the sum of its proper divisors (1369003).

5639765 is a wasteful number, since it uses less digits than its factorization.

5639765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388.

The product of its digits is 170100, while the sum is 41.

The square root of 5639765 is about 2374.8189404668. The cubic root of 5639765 is about 178.0001367671. Note that the first 3 decimals are identical.

The spelling of 5639765 in words is "five million, six hundred thirty-nine thousand, seven hundred sixty-five".