202201668 has 36 divisors (see below), whose sum is σ = 523591068. Its totient is φ = 65756160.

The previous prime is 202201639. The next prime is 202201687. The reversal of 202201668 is 866102202.

202201668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 97180164 + 105021504 = 9858^2 + 10248^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67021 + ... + 69972.

Almost surely, 2^202201668 is an apocalyptic number.

It is an amenable number.

202201668 is an abundant number, since it is smaller than the sum of its proper divisors (321389400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202201668 is a wasteful number, since it uses less digits than its factorization.

202201668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137044 (or 137039 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 202201668 is about 14219.7632891691. The cubic root of 202201668 is about 586.9416265921.

It can be divided in two parts, 2022016 and 68, that added together give a square (2022084 = 1422²).

The spelling of 202201668 in words is "two hundred two million, two hundred one thousand, six hundred sixty-eight".