243672697 has 2 divisors, whose sum is σ = 243672698. Its totient is φ = 243672696.

The previous prime is 243672683. The next prime is 243672763. The reversal of 243672697 is 796276342.

243672697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176252176 + 67420521 = 13276^2 + 8211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243672697 is a prime.

It is not a weakly prime, because it can be changed into another prime (243672607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121836348 + 121836349.

It is an arithmetic number, because the mean of its divisors is an integer number (121836349).

Almost surely, 2^243672697 is an apocalyptic number.

It is an amenable number.

243672697 is a deficient number, since it is larger than the sum of its proper divisors (1).

243672697 is an equidigital number, since it uses as much as digits as its factorization.

243672697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 46.

The square root of 243672697 is about 15610.0191223458. The cubic root of 243672697 is about 624.6004460651.

The spelling of 243672697 in words is "two hundred forty-three million, six hundred seventy-two thousand, six hundred ninety-seven".