5671638 has 24 divisors (see below), whose sum is σ = 14044368. Its totient is φ = 1620432.

The previous prime is 5671621. The next prime is 5671649. The reversal of 5671638 is 8361765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22381 + ... + 22632.

It is an arithmetic number, because the mean of its divisors is an integer number (585182).

Almost surely, 2^5671638 is an apocalyptic number.

5671638 is an abundant number, since it is smaller than the sum of its proper divisors (8372730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5671638 is a wasteful number, since it uses less digits than its factorization.

5671638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45028 (or 45025 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 5671638 is about 2381.5201027915. The cubic root of 5671638 is about 178.3348282597.

The spelling of 5671638 in words is "five million, six hundred seventy-one thousand, six hundred thirty-eight".