5638906 has 16 divisors (see below), whose sum is σ = 10410624. Its totient is φ = 2230704.

The previous prime is 5638873. The next prime is 5638939. The reversal of 5638906 is 6098365.

It is an interprime number because it is at equal distance from previous prime (5638873) and next prime (5638939).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15310 + ... + 15673.

It is an arithmetic number, because the mean of its divisors is an integer number (650664).

Almost surely, 2^5638906 is an apocalyptic number.

5638906 is a deficient number, since it is larger than the sum of its proper divisors (4771718).

5638906 is a wasteful number, since it uses less digits than its factorization.

5638906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31005.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 5638906 is about 2374.6380776868. The cubic root of 5638906 is about 177.9910991636.

The spelling of 5638906 in words is "five million, six hundred thirty-eight thousand, nine hundred six".