6487771 has 8 divisors (see below), whose sum is σ = 6799104. Its totient is φ = 6178920.

The previous prime is 6487763. The next prime is 6487807. The reversal of 6487771 is 1777846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6487771 - 2³ = 6487763 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 (6487751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6700 + ... + 7606.

It is an arithmetic number, because the mean of its divisors is an integer number (849888).

Almost surely, 2^6487771 is an apocalyptic number.

6487771 is a deficient number, since it is larger than the sum of its proper divisors (311333).

6487771 is a wasteful number, since it uses less digits than its factorization.

6487771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241.

The product of its digits is 65856, while the sum is 40.

The square root of 6487771 is about 2547.1103234842. The cubic root of 6487771 is about 186.5084462150.

The spelling of 6487771 in words is "six million, four hundred eighty-seven thousand, seven hundred seventy-one".