5636907561 has 8 divisors (see below), whose sum is σ = 7719008704. Its totient is φ = 3656372400.

The previous prime is 5636907533. The next prime is 5636907569. The reversal of 5636907561 is 1657096365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5636907561 - 2¹⁷ = 5636776489 is a prime.

It is a super-3 number, since 3×5636907561³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5636907561.

It is not an unprimeable number, because it can be changed into a prime (5636907569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25391365 + ... + 25391586.

It is an arithmetic number, because the mean of its divisors is an integer number (964876088).

Almost surely, 2^5636907561 is an apocalyptic number.

It is an amenable number.

5636907561 is a deficient number, since it is larger than the sum of its proper divisors (2082101143).

5636907561 is a wasteful number, since it uses less digits than its factorization.

5636907561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50782991.

The product of its (nonzero) digits is 1020600, while the sum is 48.

The square root of 5636907561 is about 75079.3417725542. The cubic root of 5636907561 is about 1779.7006988452.

The spelling of 5636907561 in words is "five billion, six hundred thirty-six million, nine hundred seven thousand, five hundred sixty-one".