268645673 has 2 divisors, whose sum is σ = 268645674. Its totient is φ = 268645672.

The previous prime is 268645669. The next prime is 268645691. The reversal of 268645673 is 376546862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184226329 + 84419344 = 13573^2 + 9188^2 .

It is a cyclic number.

It is not a de Polignac number, because 268645673 - 2² = 268645669 is a prime.

It is not a weakly prime, because it can be changed into another prime (268645633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134322836 + 134322837.

It is an arithmetic number, because the mean of its divisors is an integer number (134322837).

Almost surely, 2^268645673 is an apocalyptic number.

It is an amenable number.

268645673 is a deficient number, since it is larger than the sum of its proper divisors (1).

268645673 is an equidigital number, since it uses as much as digits as its factorization.

268645673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 47.

The square root of 268645673 is about 16390.4140582232. The cubic root of 268645673 is about 645.2479250417.

The spelling of 268645673 in words is "two hundred sixty-eight million, six hundred forty-five thousand, six hundred seventy-three".