249668693 has 2 divisors, whose sum is σ = 249668694. Its totient is φ = 249668692.

The previous prime is 249668689. The next prime is 249668701. The reversal of 249668693 is 396866942.

249668693 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., 206726884 + 42941809 = 14378^2 + 6553^2 .

It is a cyclic number.

It is not a de Polignac number, because 249668693 - 2² = 249668689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249668633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124834346 + 124834347.

It is an arithmetic number, because the mean of its divisors is an integer number (124834347).

Almost surely, 2^249668693 is an apocalyptic number.

It is an amenable number.

249668693 is a deficient number, since it is larger than the sum of its proper divisors (1).

249668693 is an equidigital number, since it uses as much as digits as its factorization.

249668693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 53.

The square root of 249668693 is about 15800.9079802396. The cubic root of 249668693 is about 629.6821214863.

The spelling of 249668693 in words is "two hundred forty-nine million, six hundred sixty-eight thousand, six hundred ninety-three".