6540897 has 24 divisors (see below), whose sum is σ = 9865408. Its totient is φ = 3849120.

The previous prime is 6540893. The next prime is 6540899. The reversal of 6540897 is 7980456.

6540897 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6540897 - 2² = 6540893 is a prime.

It is a Duffinian number.

6540897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6540893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13188 + ... + 13674.

Almost surely, 2^6540897 is an apocalyptic number.

It is an amenable number.

6540897 is a deficient number, since it is larger than the sum of its proper divisors (3324511).

6540897 is a wasteful number, since it uses less digits than its factorization.

With its successor (6540898) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (538).

6540897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 6540897 is about 2557.5177418739. The cubic root of 6540897 is about 187.0161462414.

The spelling of 6540897 in words is "six million, five hundred forty thousand, eight hundred ninety-seven".