268400723 has 2 divisors, whose sum is σ = 268400724. Its totient is φ = 268400722.

The previous prime is 268400689. The next prime is 268400749. The reversal of 268400723 is 327004862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268400723 - 2¹² = 268396627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268400723.

It is not a weakly prime, because it can be changed into another prime (268400773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134200361 + 134200362.

It is an arithmetic number, because the mean of its divisors is an integer number (134200362).

Almost surely, 2^268400723 is an apocalyptic number.

268400723 is a deficient number, since it is larger than the sum of its proper divisors (1).

268400723 is an equidigital number, since it uses as much as digits as its factorization.

268400723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 268400723 is about 16382.9399986693. The cubic root of 268400723 is about 645.0517539547.

The spelling of 268400723 in words is "two hundred sixty-eight million, four hundred thousand, seven hundred twenty-three".