243582066 has 240 divisors, whose sum is σ = 714244608. Its totient is φ = 60652800.

The previous prime is 243582047. The next prime is 243582067. The reversal of 243582066 is 660285342.

It is a self number, because there is not a number n which added to its sum of digits gives 243582066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243582067) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5941006 + ... + 5941046.

Almost surely, 2^243582066 is an apocalyptic number.

243582066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 243582066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357122304).

243582066 is an abundant number, since it is smaller than the sum of its proper divisors (470662542).

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

243582066 is a wasteful number, since it uses less digits than its factorization.

243582066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 243582066 is about 15607.1158770607. The cubic root of 243582066 is about 624.5229990314.

The spelling of 243582066 in words is "two hundred forty-three million, five hundred eighty-two thousand, sixty-six".