6546623539 has 4 divisors (see below), whose sum is σ = 6657583320. Its totient is φ = 6435663760.

The previous prime is 6546623521. The next prime is 6546623543. The reversal of 6546623539 is 9353266456.

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

It is a cyclic number.

It is not a de Polignac number, because 6546623539 - 2²⁵ = 6513069107 is a prime.

It is a super-2 number, since 2×6546623539² = 85716559522777769042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6546623492 and 6546623501.

It is not an unprimeable number, because it can be changed into a prime (6546623599) 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, 55479802 + ... + 55479919.

It is an arithmetic number, because the mean of its divisors is an integer number (1664395830).

Almost surely, 2^6546623539 is an apocalyptic number.

6546623539 is a deficient number, since it is larger than the sum of its proper divisors (110959781).

6546623539 is a wasteful number, since it uses less digits than its factorization.

6546623539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110959780.

The product of its digits is 3499200, while the sum is 49.

The square root of 6546623539 is about 80911.2077465168. The cubic root of 6546623539 is about 1870.7070771142.

The spelling of 6546623539 in words is "six billion, five hundred forty-six million, six hundred twenty-three thousand, five hundred thirty-nine".