6505087 has 4 divisors (see below), whose sum is σ = 6847480. Its totient is φ = 6162696.

The previous prime is 6505069. The next prime is 6505117. The reversal of 6505087 is 7805056.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6505087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505027) 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, 171168 + ... + 171205.

It is an arithmetic number, because the mean of its divisors is an integer number (1711870).

Almost surely, 2^6505087 is an apocalyptic number.

6505087 is a deficient number, since it is larger than the sum of its proper divisors (342393).

6505087 is a wasteful number, since it uses less digits than its factorization.

6505087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342392.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 6505087 is about 2550.5072044595. The cubic root of 6505087 is about 186.6742304900.

Subtracting from 6505087 its sum of digits (31), we obtain a palindrome (6505056).

The spelling of 6505087 in words is "six million, five hundred five thousand, eighty-seven".