243792697 has 2 divisors, whose sum is σ = 243792698. Its totient is φ = 243792696.

The previous prime is 243792673. The next prime is 243792707. The reversal of 243792697 is 796297342.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222039801 + 21752896 = 14901^2 + 4664^2 .

It is a cyclic number.

It is not a de Polignac number, because 243792697 - 2⁷ = 243792569 is a prime.

It is a super-2 number, since 2×243792697² = 118869758221067618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243792697.

It is not a weakly prime, because it can be changed into another prime (243792797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121896348 + 121896349.

It is an arithmetic number, because the mean of its divisors is an integer number (121896349).

Almost surely, 2^243792697 is an apocalyptic number.

It is an amenable number.

243792697 is a deficient number, since it is larger than the sum of its proper divisors (1).

243792697 is an equidigital number, since it uses as much as digits as its factorization.

243792697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 49.

The square root of 243792697 is about 15613.8623344770. The cubic root of 243792697 is about 624.7029602902.

The spelling of 243792697 in words is "two hundred forty-three million, seven hundred ninety-two thousand, six hundred ninety-seven".