5691985 has 16 divisors (see below), whose sum is σ = 7471296. Its totient is φ = 4137408.

The previous prime is 5691977. The next prime is 5692007. The reversal of 5691985 is 5891965.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5691985 - 2³ = 5691977 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3702 + ... + 5008.

It is an arithmetic number, because the mean of its divisors is an integer number (466956).

Almost surely, 2^5691985 is an apocalyptic number.

It is an amenable number.

5691985 is a deficient number, since it is larger than the sum of its proper divisors (1779311).

5691985 is a wasteful number, since it uses less digits than its factorization.

5691985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392.

The product of its digits is 97200, while the sum is 43.

The square root of 5691985 is about 2385.7881297383. The cubic root of 5691985 is about 178.5478324631.

The spelling of 5691985 in words is "five million, six hundred ninety-one thousand, nine hundred eighty-five".