6891347 has 4 divisors (see below), whose sum is σ = 6897240. Its totient is φ = 6885456.

The previous prime is 6891337. The next prime is 6891383. The reversal of 6891347 is 7431986.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6891347 - 2¹⁶ = 6825811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6891347.

It is not an unprimeable number, because it can be changed into a prime (6891317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533 + ... + 3750.

It is an arithmetic number, because the mean of its divisors is an integer number (1724310).

Almost surely, 2^6891347 is an apocalyptic number.

6891347 is a deficient number, since it is larger than the sum of its proper divisors (5893).

6891347 is a wasteful number, since it uses less digits than its factorization.

6891347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892.

The product of its digits is 36288, while the sum is 38.

The square root of 6891347 is about 2625.1375202073. The cubic root of 6891347 is about 190.2982112963.

The spelling of 6891347 in words is "six million, eight hundred ninety-one thousand, three hundred forty-seven".