5648638 has 4 divisors (see below), whose sum is σ = 8472960. Its totient is φ = 2824318.

The previous prime is 5648597. The next prime is 5648651. The reversal of 5648638 is 8368465.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×5648638² = 63814222510088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5648638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1412158 + ... + 1412161.

It is an arithmetic number, because the mean of its divisors is an integer number (2118240).

Almost surely, 2^5648638 is an apocalyptic number.

5648638 is a deficient number, since it is larger than the sum of its proper divisors (2824322).

5648638 is a wasteful number, since it uses less digits than its factorization.

5648638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824321.

The product of its digits is 138240, while the sum is 40.

The square root of 5648638 is about 2376.6863486796. The cubic root of 5648638 is about 178.0934366152.

The spelling of 5648638 in words is "five million, six hundred forty-eight thousand, six hundred thirty-eight".