6487731 has 12 divisors (see below), whose sum is σ = 9460152. Its totient is φ = 4284096.

The previous prime is 6487687. The next prime is 6487751. The reversal of 6487731 is 1377846.

6487731 is a `hidden beast` number, since 648 + 7 + 7 + 3 + 1 = 666.

It is not a de Polignac number, because 6487731 - 2⁶ = 6487667 is a prime.

It is a super-2 number, since 2×6487731² = 84181307056722, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 2406 + ... + 4331.

It is an arithmetic number, because the mean of its divisors is an integer number (788346).

Almost surely, 2^6487731 is an apocalyptic number.

6487731 is a deficient number, since it is larger than the sum of its proper divisors (2972421).

6487731 is a wasteful number, since it uses less digits than its factorization.

6487731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850 (or 6847 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 6487731 is about 2547.1024714369. The cubic root of 6487731 is about 186.5080629116.

The spelling of 6487731 in words is "six million, four hundred eighty-seven thousand, seven hundred thirty-one".