6286981 has 16 divisors (see below), whose sum is σ = 6894720. Its totient is φ = 5716480.

The previous prime is 6286933. The next prime is 6287009. The reversal of 6286981 is 1896826.

6286981 = 41² + 42² + ... + 266².

It is a cyclic number.

It is not a de Polignac number, because 6286981 - 2¹¹ = 6284933 is a prime.

It is a super-2 number, since 2×6286981² = 79052260188722, which contains 22 as substring.

It is a Duffinian number.

6286981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6286081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55581 + ... + 55693.

It is an arithmetic number, because the mean of its divisors is an integer number (430920).

Almost surely, 2^6286981 is an apocalyptic number.

It is an amenable number.

6286981 is a deficient number, since it is larger than the sum of its proper divisors (607739).

6286981 is a wasteful number, since it uses less digits than its factorization.

6286981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its digits is 41472, while the sum is 40.

The square root of 6286981 is about 2507.3852914939. The cubic root of 6286981 is about 184.5641651759.

The spelling of 6286981 in words is "six million, two hundred eighty-six thousand, nine hundred eighty-one".