268680977 has 2 divisors, whose sum is σ = 268680978. Its totient is φ = 268680976.

The previous prime is 268680949. The next prime is 268680991. The reversal of 268680977 is 779086862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193321216 + 75359761 = 13904^2 + 8681^2 .

It is a cyclic number.

It is not a de Polignac number, because 268680977 - 2⁸ = 268680721 is a prime.

It is not a weakly prime, because it can be changed into another prime (268680677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134340488 + 134340489.

It is an arithmetic number, because the mean of its divisors is an integer number (134340489).

Almost surely, 2^268680977 is an apocalyptic number.

It is an amenable number.

268680977 is a deficient number, since it is larger than the sum of its proper divisors (1).

268680977 is an equidigital number, since it uses as much as digits as its factorization.

268680977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 268680977 is about 16391.4909938053. The cubic root of 268680977 is about 645.2761888321.

The spelling of 268680977 in words is "two hundred sixty-eight million, six hundred eighty thousand, nine hundred seventy-seven".