5639679 has 8 divisors (see below), whose sum is σ = 8355120. Its totient is φ = 3759768.

The previous prime is 5639617. The next prime is 5639693. The reversal of 5639679 is 9769365.

5639679 is a `hidden beast` number, since 5 + 639 + 6 + 7 + 9 = 666.

It is not a de Polignac number, because 5639679 - 2⁹ = 5639167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104412 + ... + 104465.

It is an arithmetic number, because the mean of its divisors is an integer number (1044390).

Almost surely, 2^5639679 is an apocalyptic number.

5639679 is a deficient number, since it is larger than the sum of its proper divisors (2715441).

5639679 is a wasteful number, since it uses less digits than its factorization.

5639679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208886 (or 208880 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 5639679 is about 2374.8008337543. The cubic root of 5639679 is about 177.9992319960. Note that the first 3 decimals are identical.

The spelling of 5639679 in words is "five million, six hundred thirty-nine thousand, six hundred seventy-nine".