6118681 has 8 divisors (see below), whose sum is σ = 6395400. Its totient is φ = 5846400.

The previous prime is 6118649. The next prime is 6118699. The reversal of 6118681 is 1868116.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3841600 + 2277081 = 1960^2 + 1509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6118681 - 2⁵ = 6118649 is a prime.

It is a super-2 number, since 2×6118681² = 74876514359522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6118631) 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 7 ways as a sum of consecutive naturals, for example, 1885 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (799425).

Almost surely, 2^6118681 is an apocalyptic number.

It is an amenable number.

6118681 is a deficient number, since it is larger than the sum of its proper divisors (276719).

6118681 is a wasteful number, since it uses less digits than its factorization.

6118681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219.

The product of its digits is 2304, while the sum is 31.

The square root of 6118681 is about 2473.5967739306. The cubic root of 6118681 is about 182.9023437074.

The spelling of 6118681 in words is "six million, one hundred eighteen thousand, six hundred eighty-one".