6489534247 has 16 divisors (see below), whose sum is σ = 7677964800. Its totient is φ = 5366723040.

The previous prime is 6489534221. The next prime is 6489534263. The reversal of 6489534247 is 7424359846.

It is not a de Polignac number, because 6489534247 - 2¹¹ = 6489532199 is a prime.

It is a super-2 number, since 2×6489534247² = 84228109485971714018, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6489534194 and 6489534203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489034247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285222 + ... + 307132.

It is an arithmetic number, because the mean of its divisors is an integer number (479872800).

Almost surely, 2^6489534247 is an apocalyptic number.

6489534247 is a deficient number, since it is larger than the sum of its proper divisors (1188430553).

6489534247 is a wasteful number, since it uses less digits than its factorization.

6489534247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23406.

The product of its digits is 5806080, while the sum is 52.

The square root of 6489534247 is about 80557.6454906671. The cubic root of 6489534247 is about 1865.2534111210.

The spelling of 6489534247 in words is "six billion, four hundred eighty-nine million, five hundred thirty-four thousand, two hundred forty-seven".