6668897 has 4 divisors (see below), whose sum is σ = 6721536. Its totient is φ = 6616260.

The previous prime is 6668887. The next prime is 6668899. The reversal of 6668897 is 7988666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6668897 - 2⁴ = 6668881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6668899) 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, 26129 + ... + 26382.

It is an arithmetic number, because the mean of its divisors is an integer number (1680384).

Almost surely, 2^6668897 is an apocalyptic number.

It is an amenable number.

6668897 is a deficient number, since it is larger than the sum of its proper divisors (52639).

6668897 is a wasteful number, since it uses less digits than its factorization.

6668897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52638.

The product of its digits is 870912, while the sum is 50.

The square root of 6668897 is about 2582.4207635473. The cubic root of 6668897 is about 188.2281916763.

The spelling of 6668897 in words is "six million, six hundred sixty-eight thousand, eight hundred ninety-seven".