6745981 has 8 divisors (see below), whose sum is σ = 7380000. Its totient is φ = 6115440.

The previous prime is 6745979. The next prime is 6745997. The reversal of 6745981 is 1895476.

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 6745981 - 2¹ = 6745979 is a prime.

It is a super-2 number, since 2×6745981² = 91016519304722, which contains 22 as substring.

It is a Duffinian number.

6745981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6745961) 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, 4875 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (922500).

Almost surely, 2^6745981 is an apocalyptic number.

It is an amenable number.

6745981 is a deficient number, since it is larger than the sum of its proper divisors (634019).

6745981 is a wasteful number, since it uses less digits than its factorization.

6745981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739.

The product of its digits is 60480, while the sum is 40.

The square root of 6745981 is about 2597.3026392779. The cubic root of 6745981 is about 188.9506417212.

The spelling of 6745981 in words is "six million, seven hundred forty-five thousand, nine hundred eighty-one".