5991656 has 16 divisors (see below), whose sum is σ = 12255840. Its totient is φ = 2723440.

The previous prime is 5991653. The next prime is 5991659. The reversal of 5991656 is 6561995.

It is an interprime number because it is at equal distance from previous prime (5991653) and next prime (5991659).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5991653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33956 + ... + 34131.

It is an arithmetic number, because the mean of its divisors is an integer number (765990).

Almost surely, 2^5991656 is an apocalyptic number.

It is an amenable number.

5991656 is an abundant number, since it is smaller than the sum of its proper divisors (6264184).

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

5991656 is a wasteful number, since it uses less digits than its factorization.

5991656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68104 (or 68100 counting only the distinct ones).

The product of its digits is 72900, while the sum is 41.

The square root of 5991656 is about 2447.7859383533. The cubic root of 5991656 is about 181.6277865715.

The spelling of 5991656 in words is "five million, nine hundred ninety-one thousand, six hundred fifty-six".