6636065245 has 4 divisors (see below), whose sum is σ = 7963278300. Its totient is φ = 5308852192.

The previous prime is 6636065237. The next prime is 6636065269. The reversal of 6636065245 is 5425606366.

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 1886512356 + 4749552889 = 43434^2 + 68917^2 .

It is a cyclic number.

It is not a de Polignac number, because 6636065245 - 2³ = 6636065237 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 663606520 + ... + 663606529.

It is an arithmetic number, because the mean of its divisors is an integer number (1990819575).

Almost surely, 2^6636065245 is an apocalyptic number.

It is an amenable number.

6636065245 is a deficient number, since it is larger than the sum of its proper divisors (1327213055).

6636065245 is a wasteful number, since it uses less digits than its factorization.

6636065245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327213054.

The product of its (nonzero) digits is 777600, while the sum is 43.

The square root of 6636065245 is about 81462.0478812066. The cubic root of 6636065245 is about 1879.1879363071.

The spelling of 6636065245 in words is "six billion, six hundred thirty-six million, sixty-five thousand, two hundred forty-five".