6909897 has 12 divisors (see below), whose sum is σ = 9381840. Its totient is φ = 4523760.

The previous prime is 6909887. The next prime is 6909899. The reversal of 6909897 is 7989096.

It is a happy number.

It is not a de Polignac number, because 6909897 - 2⁸ = 6909641 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6909899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10854 + ... + 11472.

It is an arithmetic number, because the mean of its divisors is an integer number (781820).

Almost surely, 2^6909897 is an apocalyptic number.

It is an amenable number.

6909897 is a deficient number, since it is larger than the sum of its proper divisors (2471943).

6909897 is an equidigital number, since it uses as much as digits as its factorization.

6909897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 6909897 is about 2628.6682940227. The cubic root of 6909897 is about 190.4688053853.

The spelling of 6909897 in words is "six million, nine hundred nine thousand, eight hundred ninety-seven".