6540477 has 4 divisors (see below), whose sum is σ = 8720640. Its totient is φ = 4360316.

The previous prime is 6540467. The next prime is 6540493. The reversal of 6540477 is 7740456.

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.

It is a cyclic number.

It is not a de Polignac number, because 6540477 - 2¹¹ = 6538429 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090077 + ... + 1090082.

It is an arithmetic number, because the mean of its divisors is an integer number (2180160).

Almost surely, 2^6540477 is an apocalyptic number.

It is an amenable number.

6540477 is a deficient number, since it is larger than the sum of its proper divisors (2180163).

6540477 is a wasteful number, since it uses less digits than its factorization.

6540477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180162.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 6540477 is about 2557.4356296885. The cubic root of 6540477 is about 187.0121433010.

The spelling of 6540477 in words is "six million, five hundred forty thousand, four hundred seventy-seven".