6498616249 has 4 divisors (see below), whose sum is σ = 6674254564. Its totient is φ = 6322977936.

The previous prime is 6498616247. The next prime is 6498616277. The reversal of 6498616249 is 9426168946.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5625000000 + 873616249 = 75000^2 + 29557^2 .

It is a cyclic number.

It is not a de Polignac number, because 6498616249 - 2¹ = 6498616247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6498616249.

It is not an unprimeable number, because it can be changed into a prime (6498616247) 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, 87819102 + ... + 87819175.

It is an arithmetic number, because the mean of its divisors is an integer number (1668563641).

Almost surely, 2^6498616249 is an apocalyptic number.

It is an amenable number.

6498616249 is a deficient number, since it is larger than the sum of its proper divisors (175638315).

6498616249 is a wasteful number, since it uses less digits than its factorization.

6498616249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175638314.

The product of its digits is 4478976, while the sum is 55.

The square root of 6498616249 is about 80613.9953668096. The cubic root of 6498616249 is about 1866.1231365472.

The spelling of 6498616249 in words is "six billion, four hundred ninety-eight million, six hundred sixteen thousand, two hundred forty-nine".