243714645 has 12 divisors (see below), whose sum is σ = 422438796. Its totient is φ = 129981120.

The previous prime is 243714641. The next prime is 243714673. The reversal of 243714645 is 546417342.

243714645 is a `hidden beast` number, since 2 + 4 + 3 + 7 + 1 + 4 + 645 = 666.

243714645 is digitally balanced in base 2, 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 48358116 + 195356529 = 6954^2 + 13977^2 .

It is not a de Polignac number, because 243714645 - 2² = 243714641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243714641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2707896 + ... + 2707985.

It is an arithmetic number, because the mean of its divisors is an integer number (35203233).

Almost surely, 2^243714645 is an apocalyptic number.

It is an amenable number.

243714645 is a deficient number, since it is larger than the sum of its proper divisors (178724151).

243714645 is a wasteful number, since it uses less digits than its factorization.

243714645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415892 (or 5415889 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 243714645 is about 15611.3626887597. The cubic root of 243714645 is about 624.6362854465.

The spelling of 243714645 in words is "two hundred forty-three million, seven hundred fourteen thousand, six hundred forty-five".