6489799659 has 36 divisors (see below), whose sum is σ = 11058269040. Its totient is φ = 3656207520.

The previous prime is 6489799649. The next prime is 6489799661. The reversal of 6489799659 is 9569979846.

6489799659 is a `hidden beast` number, since 6 + 489 + 7 + 9 + 96 + 59 = 666.

It is not a de Polignac number, because 6489799659 - 2¹³ = 6489791467 is a prime.

It is a super-2 number, since 2×6489799659² = 84234999227913032562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6489799649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72324 + ... + 134945.

It is an arithmetic number, because the mean of its divisors is an integer number (307174140).

Almost surely, 2^6489799659 is an apocalyptic number.

6489799659 is a deficient number, since it is larger than the sum of its proper divisors (4568469381).

6489799659 is a wasteful number, since it uses less digits than its factorization.

6489799659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207360 (or 207350 counting only the distinct ones).

The product of its digits is 264539520, while the sum is 72.

The square root of 6489799659 is about 80559.2928159129. The cubic root of 6489799659 is about 1865.2788394424.

The spelling of 6489799659 in words is "six billion, four hundred eighty-nine million, seven hundred ninety-nine thousand, six hundred fifty-nine".