202665401 has 2 divisors, whose sum is σ = 202665402. Its totient is φ = 202665400.

The previous prime is 202665389. The next prime is 202665403. The reversal of 202665401 is 104566202.

202665401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199939600 + 2725801 = 14140^2 + 1651^2 .

It is a cyclic number.

It is not a de Polignac number, because 202665401 - 2¹⁰ = 202664377 is a prime.

Together with 202665403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202665403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101332700 + 101332701.

It is an arithmetic number, because the mean of its divisors is an integer number (101332701).

Almost surely, 2^202665401 is an apocalyptic number.

It is an amenable number.

202665401 is a deficient number, since it is larger than the sum of its proper divisors (1).

202665401 is an equidigital number, since it uses as much as digits as its factorization.

202665401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 202665401 is about 14236.0598832683. The cubic root of 202665401 is about 587.3899848926.

The spelling of 202665401 in words is "two hundred two million, six hundred sixty-five thousand, four hundred one".