6168981 has 32 divisors (see below), whose sum is σ = 10321920. Its totient is φ = 3190464.

The previous prime is 6168971. The next prime is 6168989. The reversal of 6168981 is 1898616.

6168981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6168981 - 2⁵ = 6168949 is a prime.

It is a super-2 number, since 2×6168981² = 76112653156722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6168989) 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 31 ways as a sum of consecutive naturals, for example, 15916 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (322560).

Almost surely, 2^6168981 is an apocalyptic number.

It is an amenable number.

6168981 is a deficient number, since it is larger than the sum of its proper divisors (4152939).

6168981 is a wasteful number, since it uses less digits than its factorization.

6168981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its digits is 20736, while the sum is 39.

The square root of 6168981 is about 2483.7433442286. The cubic root of 6168981 is about 183.4021732298.

The spelling of 6168981 in words is "six million, one hundred sixty-eight thousand, nine hundred eighty-one".