6888749 has 8 divisors (see below), whose sum is σ = 7915200. Its totient is φ = 5872896.

The previous prime is 6888737. The next prime is 6888793. The reversal of 6888749 is 9478886.

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 6888749 - 2⁴ = 6888733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6888697 and 6888706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6888709) 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, 1199 + ... + 3900.

It is an arithmetic number, because the mean of its divisors is an integer number (989400).

Almost surely, 2^6888749 is an apocalyptic number.

It is an amenable number.

6888749 is a deficient number, since it is larger than the sum of its proper divisors (1026451).

6888749 is a wasteful number, since it uses less digits than its factorization.

6888749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5299.

The product of its digits is 774144, while the sum is 50.

The square root of 6888749 is about 2624.6426423420. The cubic root of 6888749 is about 190.2742944968.

The spelling of 6888749 in words is "six million, eight hundred eighty-eight thousand, seven hundred forty-nine".