5639787 has 12 divisors (see below), whose sum is σ = 8448440. Its totient is φ = 3759696.

The previous prime is 5639773. The next prime is 5639797. The reversal of 5639787 is 7879365.

It is a happy number.

5639787 is a `hidden beast` number, since 5 + 639 + 7 + 8 + 7 = 666.

It is not a de Polignac number, because 5639787 - 2⁶ = 5639723 is a prime.

It is a d-powerful number, because it can be written as 5³ + 6² + 3 + 9⁷ + 7³ + 8⁵ + 7⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5639707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11362 + ... + 11847.

Almost surely, 2^5639787 is an apocalyptic number.

5639787 is a deficient number, since it is larger than the sum of its proper divisors (2808653).

5639787 is an equidigital number, since it uses as much as digits as its factorization.

5639787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23224 (or 23212 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 5639787 is about 2374.8235723944. The cubic root of 5639787 is about 178.0003682187. Note that the first 3 decimals are identical.

The spelling of 5639787 in words is "five million, six hundred thirty-nine thousand, seven hundred eighty-seven".