6749931 has 8 divisors (see below), whose sum is σ = 9089424. Its totient is φ = 4455200.

The previous prime is 6749927. The next prime is 6749933. The reversal of 6749931 is 1399476.

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

It is a cyclic number.

It is not a de Polignac number, because 6749931 - 2² = 6749927 is a prime.

It is a super-2 number, since 2×6749931² = 91123137009522, which contains 22 as substring.

6749931 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6749931.

It is not an unprimeable number, because it can be changed into a prime (6749933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10836 + ... + 11441.

It is an arithmetic number, because the mean of its divisors is an integer number (1136178).

Almost surely, 2^6749931 is an apocalyptic number.

6749931 is a deficient number, since it is larger than the sum of its proper divisors (2339493).

6749931 is a wasteful number, since it uses less digits than its factorization.

6749931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22381.

The product of its digits is 40824, while the sum is 39.

The square root of 6749931 is about 2598.0629322632. The cubic root of 6749931 is about 188.9875135224.

The spelling of 6749931 in words is "six million, seven hundred forty-nine thousand, nine hundred thirty-one".