6745999 has 8 divisors (see below), whose sum is σ = 7402752. Its totient is φ = 6108960.

The previous prime is 6745997. The next prime is 6746039. The reversal of 6745999 is 9995476.

6745999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6745999 - 2¹ = 6745997 is a prime.

It is a Duffinian number.

6745999 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6745997) 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, 4207 + ... + 5584.

It is an arithmetic number, because the mean of its divisors is an integer number (925344).

Almost surely, 2^6745999 is an apocalyptic number.

6745999 is a deficient number, since it is larger than the sum of its proper divisors (656753).

6745999 is a wasteful number, since it uses less digits than its factorization.

6745999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857.

The product of its digits is 612360, while the sum is 49.

The square root of 6745999 is about 2597.3061044090. The cubic root of 6745999 is about 188.9508097773.

It can be divided in two parts, 6745 and 999, that added together give a square (7744 = 88²).

The spelling of 6745999 in words is "six million, seven hundred forty-five thousand, nine hundred ninety-nine".