6635622265 has 4 divisors (see below), whose sum is σ = 7962746724. Its totient is φ = 5308497808.

The previous prime is 6635622239. The next prime is 6635622277. The reversal of 6635622265 is 5622265366.

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 2566840896 + 4068781369 = 50664^2 + 63787^2 .

It is a cyclic number.

It is not a de Polignac number, because 6635622265 - 2²⁵ = 6602067833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663562222 + ... + 663562231.

It is an arithmetic number, because the mean of its divisors is an integer number (1990686681).

Almost surely, 2^6635622265 is an apocalyptic number.

It is an amenable number.

6635622265 is a deficient number, since it is larger than the sum of its proper divisors (1327124459).

6635622265 is a wasteful number, since it uses less digits than its factorization.

6635622265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327124458.

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

The square root of 6635622265 is about 81459.3289009921. The cubic root of 6635622265 is about 1879.1461213076.

The spelling of 6635622265 in words is "six billion, six hundred thirty-five million, six hundred twenty-two thousand, two hundred sixty-five".