5997681 has 12 divisors (see below), whose sum is σ = 8687952. Its totient is φ = 3987096.

The previous prime is 5997679. The next prime is 5997689. The reversal of 5997681 is 1867995.

It is not a de Polignac number, because 5997681 - 2¹ = 5997679 is a prime.

It is a super-2 number, since 2×5997681² = 71944354755522, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5997689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3490 + ... + 4916.

It is an arithmetic number, because the mean of its divisors is an integer number (723996).

Almost surely, 2^5997681 is an apocalyptic number.

It is an amenable number.

5997681 is a deficient number, since it is larger than the sum of its proper divisors (2690271).

5997681 is a wasteful number, since it uses less digits than its factorization.

5997681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900 (or 1897 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 5997681 is about 2449.0163331428. The cubic root of 5997681 is about 181.6886456962.

The spelling of 5997681 in words is "five million, nine hundred ninety-seven thousand, six hundred eighty-one".