243090066 has 32 divisors (see below), whose sum is σ = 524260800. Its totient is φ = 74891520.

The previous prime is 243090053. The next prime is 243090077. The reversal of 243090066 is 660090342.

243090066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21331 + ... + 30678.

It is an arithmetic number, because the mean of its divisors is an integer number (16383150).

Almost surely, 2^243090066 is an apocalyptic number.

243090066 is an abundant number, since it is smaller than the sum of its proper divisors (281170734).

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

243090066 is a wasteful number, since it uses less digits than its factorization.

243090066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52074.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 243090066 is about 15591.3458687825. The cubic root of 243090066 is about 624.1022340301.

The spelling of 243090066 in words is "two hundred forty-three million, ninety thousand, sixty-six".