6897447 has 32 divisors (see below), whose sum is σ = 11059200. Its totient is φ = 4235616.

The previous prime is 6897431. The next prime is 6897463. The reversal of 6897447 is 7447986.

6897447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6897431) and next prime (6897463).

It is not a de Polignac number, because 6897447 - 2⁴ = 6897431 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6897487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17818 + ... + 18200.

It is an arithmetic number, because the mean of its divisors is an integer number (345600).

Almost surely, 2^6897447 is an apocalyptic number.

6897447 is a deficient number, since it is larger than the sum of its proper divisors (4161753).

6897447 is a wasteful number, since it uses less digits than its factorization.

6897447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 438 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 6897447 is about 2626.2991071087. The cubic root of 6897447 is about 190.3543433680.

The spelling of 6897447 in words is "six million, eight hundred ninety-seven thousand, four hundred forty-seven".