6540475 has 6 divisors (see below), whose sum is σ = 8110220. Its totient is φ = 5232360.

The previous prime is 6540467. The next prime is 6540493. The reversal of 6540475 is 5740456.

It is a happy number.

It is not a de Polignac number, because 6540475 - 2³ = 6540467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130785 + ... + 130834.

Almost surely, 2^6540475 is an apocalyptic number.

6540475 is a deficient number, since it is larger than the sum of its proper divisors (1569745).

6540475 is a wasteful number, since it uses less digits than its factorization.

6540475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261629 (or 261624 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 6540475 is about 2557.4352386717. The cubic root of 6540475 is about 187.0121242389.

The spelling of 6540475 in words is "six million, five hundred forty thousand, four hundred seventy-five".