5641987 has 8 divisors (see below), whose sum is σ = 6217904. Its totient is φ = 5086368.

The previous prime is 5641939. The next prime is 5641997. The reversal of 5641987 is 7891465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5641987 - 2⁷ = 5641859 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5641997) 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, 4488 + ... + 5605.

It is an arithmetic number, because the mean of its divisors is an integer number (777238).

Almost surely, 2^5641987 is an apocalyptic number.

5641987 is a deficient number, since it is larger than the sum of its proper divisors (575917).

5641987 is a wasteful number, since it uses less digits than its factorization.

5641987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10149.

The product of its digits is 60480, while the sum is 40.

The square root of 5641987 is about 2375.2867195351. The cubic root of 5641987 is about 178.0235103399.

The spelling of 5641987 in words is "five million, six hundred forty-one thousand, nine hundred eighty-seven".