5636220637 has 4 divisors (see below), whose sum is σ = 5642575776. Its totient is φ = 5629865500.

The previous prime is 5636220631. The next prime is 5636220641. The reversal of 5636220637 is 7360226365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5636220637 - 2¹⁹ = 5635696349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5636220637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5636220631) 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, 3176239 + ... + 3178012.

It is an arithmetic number, because the mean of its divisors is an integer number (1410643944).

Almost surely, 2^5636220637 is an apocalyptic number.

It is an amenable number.

5636220637 is a deficient number, since it is larger than the sum of its proper divisors (6355139).

5636220637 is an equidigital number, since it uses as much as digits as its factorization.

5636220637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355138.

The product of its (nonzero) digits is 272160, while the sum is 40.

The square root of 5636220637 is about 75074.7669793254. The cubic root of 5636220637 is about 1779.6284033668.

The spelling of 5636220637 in words is "five billion, six hundred thirty-six million, two hundred twenty thousand, six hundred thirty-seven".