6747981 has 8 divisors (see below), whose sum is σ = 9307680. Its totient is φ = 4343472.

The previous prime is 6747973. The next prime is 6747989. The reversal of 6747981 is 1897476.

It is an interprime number because it is at equal distance from previous prime (6747973) and next prime (6747989).

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

It is not a de Polignac number, because 6747981 - 2³ = 6747973 is a prime.

It is a super-2 number, since 2×6747981² = 91070495152722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6747989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38695 + ... + 38868.

It is an arithmetic number, because the mean of its divisors is an integer number (1163460).

Almost surely, 2^6747981 is an apocalyptic number.

It is an amenable number.

6747981 is a deficient number, since it is larger than the sum of its proper divisors (2559699).

6747981 is a wasteful number, since it uses less digits than its factorization.

6747981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77595.

The product of its digits is 84672, while the sum is 42.

The square root of 6747981 is about 2597.6876255624. The cubic root of 6747981 is about 188.9693127860.

The spelling of 6747981 in words is "six million, seven hundred forty-seven thousand, nine hundred eighty-one".