6866739 has 24 divisors (see below), whose sum is σ = 10920000. Its totient is φ = 4123440.

The previous prime is 6866731. The next prime is 6866749. The reversal of 6866739 is 9376686.

6866739 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6866739 - 2³ = 6866731 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 6866694 and 6866703.

It is not an unprimeable number, because it can be changed into a prime (6866731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13512 + ... + 14010.

It is an arithmetic number, because the mean of its divisors is an integer number (455000).

Almost surely, 2^6866739 is an apocalyptic number.

6866739 is a deficient number, since it is larger than the sum of its proper divisors (4053261).

6866739 is a wasteful number, since it uses less digits than its factorization.

6866739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 652 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 6866739 is about 2620.4463360275. The cubic root of 6866739 is about 190.0714320516.

The spelling of 6866739 in words is "six million, eight hundred sixty-six thousand, seven hundred thirty-nine".