6897481 has 4 divisors (see below), whose sum is σ = 6941572. Its totient is φ = 6853392.

The previous prime is 6897463. The next prime is 6897487. The reversal of 6897481 is 1847986.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 968256 + 5929225 = 984^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 6897481 - 2⁷ = 6897353 is a prime.

It is a super-2 number, since 2×6897481² = 95150488290722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6² + 8³ + 9⁷ + 7⁵ + 4 + 8⁷ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6897487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21810 + ... + 22123.

It is an arithmetic number, because the mean of its divisors is an integer number (1735393).

Almost surely, 2^6897481 is an apocalyptic number.

It is an amenable number.

6897481 is a deficient number, since it is larger than the sum of its proper divisors (44091).

6897481 is a wasteful number, since it uses less digits than its factorization.

6897481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44090.

The product of its digits is 96768, while the sum is 43.

The square root of 6897481 is about 2626.3055800877. The cubic root of 6897481 is about 190.3546561425.

The spelling of 6897481 in words is "six million, eight hundred ninety-seven thousand, four hundred eighty-one".