2235736621 has 2 divisors, whose sum is σ = 2235736622. Its totient is φ = 2235736620.

The previous prime is 2235736583. The next prime is 2235736627. The reversal of 2235736621 is 1266375322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1756783396 + 478953225 = 41914^2 + 21885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235736621 - 2²⁷ = 2101518893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2235736627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1117868310 + 1117868311.

It is an arithmetic number, because the mean of its divisors is an integer number (1117868311).

Almost surely, 2^2235736621 is an apocalyptic number.

It is an amenable number.

2235736621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2235736621 is an equidigital number, since it uses as much as digits as its factorization.

2235736621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 2235736621 is about 47283.5766519412. The cubic root of 2235736621 is about 1307.5958900021.

The spelling of 2235736621 in words is "two billion, two hundred thirty-five million, seven hundred thirty-six thousand, six hundred twenty-one".