268388477 has 12 divisors (see below), whose sum is σ = 309643488. Its totient is φ = 227869200.

The previous prime is 268388473. The next prime is 268388513. The reversal of 268388477 is 774883862.

It is not a de Polignac number, because 268388477 - 2² = 268388473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268388473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 495827 + ... + 496367.

It is an arithmetic number, because the mean of its divisors is an integer number (25803624).

Almost surely, 2^268388477 is an apocalyptic number.

It is an amenable number.

268388477 is a deficient number, since it is larger than the sum of its proper divisors (41255011).

268388477 is an frugal number, since it uses more digits than its factorization.

268388477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 679 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 53.

The square root of 268388477 is about 16382.5662519643. The cubic root of 268388477 is about 645.0419434696.

The spelling of 268388477 in words is "two hundred sixty-eight million, three hundred eighty-eight thousand, four hundred seventy-seven".