6897663 has 8 divisors (see below), whose sum is σ = 10218800. Its totient is φ = 4598424.

The previous prime is 6897659. The next prime is 6897689. The reversal of 6897663 is 3667986.

6897663 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 6897663 - 2² = 6897659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6897643) 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, 127708 + ... + 127761.

It is an arithmetic number, because the mean of its divisors is an integer number (1277350).

Almost surely, 2^6897663 is an apocalyptic number.

6897663 is a deficient number, since it is larger than the sum of its proper divisors (3321137).

6897663 is a wasteful number, since it uses less digits than its factorization.

6897663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255478 (or 255472 counting only the distinct ones).

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

The square root of 6897663 is about 2626.3402292925. The cubic root of 6897663 is about 190.3563303886.

The spelling of 6897663 in words is "six million, eight hundred ninety-seven thousand, six hundred sixty-three".