268623253 has 2 divisors, whose sum is σ = 268623254. Its totient is φ = 268623252.

The previous prime is 268623191. The next prime is 268623263. The reversal of 268623253 is 352326862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267715044 + 908209 = 16362^2 + 953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268623253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268623263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134311626 + 134311627.

It is an arithmetic number, because the mean of its divisors is an integer number (134311627).

Almost surely, 2^268623253 is an apocalyptic number.

It is an amenable number.

268623253 is a deficient number, since it is larger than the sum of its proper divisors (1).

268623253 is an equidigital number, since it uses as much as digits as its factorization.

268623253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 37.

The square root of 268623253 is about 16389.7301076009. The cubic root of 268623253 is about 645.2299746801.

The spelling of 268623253 in words is "two hundred sixty-eight million, six hundred twenty-three thousand, two hundred fifty-three".