6891897 has 8 divisors (see below), whose sum is σ = 9219456. Its totient is φ = 4579472.

The previous prime is 6891887. The next prime is 6891901. The reversal of 6891897 is 7981986.

It is a happy number.

6891897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6891897 - 2⁷ = 6891769 is a prime.

It is a super-3 number, since 3×6891897³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6891887) 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, 2673 + ... + 4574.

It is an arithmetic number, because the mean of its divisors is an integer number (1152432).

Almost surely, 2^6891897 is an apocalyptic number.

It is an amenable number.

6891897 is a deficient number, since it is larger than the sum of its proper divisors (2327559).

6891897 is a wasteful number, since it uses less digits than its factorization.

6891897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567.

The product of its digits is 217728, while the sum is 48.

The square root of 6891897 is about 2625.2422745339. The cubic root of 6891897 is about 190.3032737431.

The spelling of 6891897 in words is "six million, eight hundred ninety-one thousand, eight hundred ninety-seven".