243206166 has 16 divisors (see below), whose sum is σ = 555899904. Its totient is φ = 69487464.

The previous prime is 243206147. The next prime is 243206167. The reversal of 243206166 is 661602342.

243206166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243206167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2895270 + ... + 2895353.

It is an arithmetic number, because the mean of its divisors is an integer number (34743744).

Almost surely, 2^243206166 is an apocalyptic number.

243206166 is an abundant number, since it is smaller than the sum of its proper divisors (312693738).

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

243206166 is a wasteful number, since it uses less digits than its factorization.

243206166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790635.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 243206166 is about 15595.0686436450. The cubic root of 243206166 is about 624.2015754502.

It can be divided in two parts, 24 and 3206166, that multiplied together give a square (76947984 = 8772²).

The spelling of 243206166 in words is "two hundred forty-three million, two hundred six thousand, one hundred sixty-six".