268508677 has 2 divisors, whose sum is σ = 268508678. Its totient is φ = 268508676.

The previous prime is 268508623. The next prime is 268508777. The reversal of 268508677 is 776805862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 267355201 + 1153476 = 16351^2 + 1074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268508677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268508677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268508077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134254338 + 134254339.

It is an arithmetic number, because the mean of its divisors is an integer number (134254339).

Almost surely, 2^268508677 is an apocalyptic number.

It is an amenable number.

268508677 is a deficient number, since it is larger than the sum of its proper divisors (1).

268508677 is an equidigital number, since it uses as much as digits as its factorization.

268508677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 268508677 is about 16386.2343752309. The cubic root of 268508677 is about 645.1382248879.

The spelling of 268508677 in words is "two hundred sixty-eight million, five hundred eight thousand, six hundred seventy-seven".