268642503 has 6 divisors (see below), whose sum is σ = 388039184. Its totient is φ = 179094996.

The previous prime is 268642481. The next prime is 268642511. The reversal of 268642503 is 305246862.

268642503 is a `hidden beast` number, since 2 + 6 + 8 + 642 + 5 + 0 + 3 = 666.

It is not a de Polignac number, because 268642503 - 2⁸ = 268642247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268642603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14924575 + ... + 14924592.

Almost surely, 2^268642503 is an apocalyptic number.

268642503 is a deficient number, since it is larger than the sum of its proper divisors (119396681).

268642503 is a wasteful number, since it uses less digits than its factorization.

268642503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29849173 (or 29849170 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 268642503 is about 16390.3173550728. The cubic root of 268642503 is about 645.2453870717.

The spelling of 268642503 in words is "two hundred sixty-eight million, six hundred forty-two thousand, five hundred three".