268477397 has 2 divisors, whose sum is σ = 268477398. Its totient is φ = 268477396.

The previous prime is 268477373. The next prime is 268477403. The reversal of 268477397 is 793774862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265233796 + 3243601 = 16286^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 268477397 - 2²⁸ = 41941 is a prime.

It is a super-2 number, since 2×268477397² = 144160225399791218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268477697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134238698 + 134238699.

It is an arithmetic number, because the mean of its divisors is an integer number (134238699).

Almost surely, 2^268477397 is an apocalyptic number.

It is an amenable number.

268477397 is a deficient number, since it is larger than the sum of its proper divisors (1).

268477397 is an equidigital number, since it uses as much as digits as its factorization.

268477397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 53.

The square root of 268477397 is about 16385.2798877529. The cubic root of 268477397 is about 645.1131720572.

The spelling of 268477397 in words is "two hundred sixty-eight million, four hundred seventy-seven thousand, three hundred ninety-seven".