6891097 has 4 divisors (see below), whose sum is σ = 6896656. Its totient is φ = 6885540.

The previous prime is 6891077. The next prime is 6891107. The reversal of 6891097 is 7901986.

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, 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 6891097 - 2⁷ = 6890969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6891077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22 + ... + 3712.

It is an arithmetic number, because the mean of its divisors is an integer number (1724164).

Almost surely, 2^6891097 is an apocalyptic number.

It is an amenable number.

6891097 is a deficient number, since it is larger than the sum of its proper divisors (5559).

6891097 is a wasteful number, since it uses less digits than its factorization.

6891097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 6891097 is about 2625.0899032224. The cubic root of 6891097 is about 190.2959100951.

The spelling of 6891097 in words is "six million, eight hundred ninety-one thousand, ninety-seven".