6498856281 has 4 divisors (see below), whose sum is σ = 8665141712. Its totient is φ = 4332570852.

The previous prime is 6498856279. The next prime is 6498856289. The reversal of 6498856281 is 1826588946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6498856281 - 2¹ = 6498856279 is a prime.

It is a super-2 number, since 2×6498856281² = 84470265922186301922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6498856289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1083142711 + ... + 1083142716.

It is an arithmetic number, because the mean of its divisors is an integer number (2166285428).

Almost surely, 2^6498856281 is an apocalyptic number.

It is an amenable number.

6498856281 is a deficient number, since it is larger than the sum of its proper divisors (2166285431).

6498856281 is a wasteful number, since it uses less digits than its factorization.

6498856281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166285430.

The product of its digits is 6635520, while the sum is 57.

The square root of 6498856281 is about 80615.4841268103. The cubic root of 6498856281 is about 1866.1461118872.

The spelling of 6498856281 in words is "six billion, four hundred ninety-eight million, eight hundred fifty-six thousand, two hundred eighty-one".