5641988 has 18 divisors (see below), whose sum is σ = 10853598. Its totient is φ = 2564320.

The previous prime is 5641939. The next prime is 5641997. The reversal of 5641988 is 8891465.

It can be written as a sum of positive squares in only one way, i.e., 5234944 + 407044 = 2288^2 + 638^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5345 + ... + 6312.

Almost surely, 2^5641988 is an apocalyptic number.

It is an amenable number.

5641988 is a deficient number, since it is larger than the sum of its proper divisors (5211610).

5641988 is a wasteful number, since it uses less digits than its factorization.

5641988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11683 (or 11670 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 5641988 is about 2375.2869300360. The cubic root of 5641988 is about 178.0235208577.

It can be divided in two parts, 564 and 1988, that added together give a palindrome (2552).

The spelling of 5641988 in words is "five million, six hundred forty-one thousand, nine hundred eighty-eight".