5236566661 has 8 divisors (see below), whose sum is σ = 5560493400. Its totient is φ = 4914405888.

The previous prime is 5236566641. The next prime is 5236566677. The reversal of 5236566661 is 1666656325.

It can be written as a sum of positive squares in 4 ways, for example, as 1181296900 + 4055269761 = 34370^2 + 63681^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5236566661 - 2¹⁹ = 5236042373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5236566641) 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, 435376 + ... + 447241.

It is an arithmetic number, because the mean of its divisors is an integer number (695061675).

Almost surely, 2^5236566661 is an apocalyptic number.

It is an amenable number.

5236566661 is a deficient number, since it is larger than the sum of its proper divisors (323926739).

5236566661 is a wasteful number, since it uses less digits than its factorization.

5236566661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882983.

The product of its digits is 1166400, while the sum is 46.

The square root of 5236566661 is about 72364.1255111951. The cubic root of 5236566661 is about 1736.5296866542.

The spelling of 5236566661 in words is "five billion, two hundred thirty-six million, five hundred sixty-six thousand, six hundred sixty-one".