6471727487 has 4 divisors (see below), whose sum is σ = 6476741736. Its totient is φ = 6466713240.

The previous prime is 6471727477. The next prime is 6471727489. The reversal of 6471727487 is 7847271746.

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

It is a cyclic number.

It is not a de Polignac number, because 6471727487 - 2⁸ = 6471727231 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 (6471727489) 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, 2505188 + ... + 2507769.

It is an arithmetic number, because the mean of its divisors is an integer number (1619185434).

Almost surely, 2^6471727487 is an apocalyptic number.

6471727487 is a deficient number, since it is larger than the sum of its proper divisors (5014249).

6471727487 is a wasteful number, since it uses less digits than its factorization.

6471727487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014248.

The product of its digits is 3687936, while the sum is 53.

The square root of 6471727487 is about 80447.0477208455. The cubic root of 6471727487 is about 1863.5458132196.

The spelling of 6471727487 in words is "six billion, four hundred seventy-one million, seven hundred twenty-seven thousand, four hundred eighty-seven".