6427659999 has 16 divisors (see below), whose sum is σ = 9087193440. Its totient is φ = 4027330560.

The previous prime is 6427659989. The next prime is 6427660003. The reversal of 6427659999 is 9999567246.

It is a happy number.

It is not a de Polignac number, because 6427659999 - 2⁴ = 6427659983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6427659919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52722 + ... + 125039.

It is an arithmetic number, because the mean of its divisors is an integer number (567949590).

Almost surely, 2^6427659999 is an apocalyptic number.

6427659999 is a deficient number, since it is larger than the sum of its proper divisors (2659533441).

6427659999 is a wasteful number, since it uses less digits than its factorization.

6427659999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178490.

The product of its digits is 66134880, while the sum is 66.

The square root of 6427659999 is about 80172.6886102743. The cubic root of 6427659999 is about 1859.3064048772.

The spelling of 6427659999 in words is "six billion, four hundred twenty-seven million, six hundred fifty-nine thousand, nine hundred ninety-nine".