6635563345 has 4 divisors (see below), whose sum is σ = 7962676020. Its totient is φ = 5308450672.

The previous prime is 6635563343. The next prime is 6635563357. The reversal of 6635563345 is 5433655366.

It is a happy number.

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 3578910976 + 3056652369 = 59824^2 + 55287^2 .

It is a cyclic number.

It is not a de Polignac number, because 6635563345 - 2¹ = 6635563343 is a prime.

It is a super-3 number, since 3×6635563345³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6635563295 and 6635563304.

It is not an unprimeable number, because it can be changed into a prime (6635563343) 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, 663556330 + ... + 663556339.

It is an arithmetic number, because the mean of its divisors is an integer number (1990669005).

Almost surely, 2^6635563345 is an apocalyptic number.

It is an amenable number.

6635563345 is a deficient number, since it is larger than the sum of its proper divisors (1327112675).

6635563345 is a wasteful number, since it uses less digits than its factorization.

6635563345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327112674.

The product of its digits is 2916000, while the sum is 46.

The square root of 6635563345 is about 81458.9672473203. The cubic root of 6635563345 is about 1879.1405594270.

The spelling of 6635563345 in words is "six billion, six hundred thirty-five million, five hundred sixty-three thousand, three hundred forty-five".