6489731 has 4 divisors (see below), whose sum is σ = 6494832. Its totient is φ = 6484632.

The previous prime is 6489719. The next prime is 6489779. The reversal of 6489731 is 1379846.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6489731 - 2⁶ = 6489667 is a prime.

It is a super-2 number, since 2×6489731² = 84233216904722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6489781) 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, 1106 + ... + 3768.

It is an arithmetic number, because the mean of its divisors is an integer number (1623708).

Almost surely, 2^6489731 is an apocalyptic number.

6489731 is a deficient number, since it is larger than the sum of its proper divisors (5101).

6489731 is a wasteful number, since it uses less digits than its factorization.

6489731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100.

The product of its digits is 36288, while the sum is 38.

The square root of 6489731 is about 2547.4950441561. The cubic root of 6489731 is about 186.5272261498.

The spelling of 6489731 in words is "six million, four hundred eighty-nine thousand, seven hundred thirty-one".