202861 has 4 divisors (see below), whose sum is σ = 214812. Its totient is φ = 190912.

The previous prime is 202859. The next prime is 202877. The reversal of 202861 is 168202.

It is a happy number.

202861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164836 + 38025 = 406^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 202861 - 2¹ = 202859 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5950 + ... + 5983.

It is an arithmetic number, because the mean of its divisors is an integer number (53703).

2²⁰²⁸⁶¹ is an apocalyptic number.

It is an amenable number.

202861 is a deficient number, since it is larger than the sum of its proper divisors (11951).

202861 is a wasteful number, since it uses less digits than its factorization.

202861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11950.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 202861 is about 450.4009325035. The cubic root of 202861 is about 58.7578893887.

The spelling of 202861 in words is "two hundred two thousand, eight hundred sixty-one".