236704021 has 2 divisors, whose sum is σ = 236704022. Its totient is φ = 236704020.

The previous prime is 236704007. The next prime is 236704049. The reversal of 236704021 is 120407632.

236704021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214036900 + 22667121 = 14630^2 + 4761^2 .

It is a cyclic number.

It is not a de Polignac number, because 236704021 - 2¹⁹ = 236179733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236704081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118352010 + 118352011.

It is an arithmetic number, because the mean of its divisors is an integer number (118352011).

Almost surely, 2^236704021 is an apocalyptic number.

It is an amenable number.

236704021 is a deficient number, since it is larger than the sum of its proper divisors (1).

236704021 is an equidigital number, since it uses as much as digits as its factorization.

236704021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 236704021 is about 15385.1883641378. The cubic root of 236704021 is about 618.5885521573.

The spelling of 236704021 in words is "two hundred thirty-six million, seven hundred four thousand, twenty-one".