268315515 has 96 divisors (see below), whose sum is σ = 521049984. Its totient is φ = 126904320.

The previous prime is 268315513. The next prime is 268315517. The reversal of 268315515 is 515513862.

It is a happy number.

268315515 is a `hidden beast` number, since 26 + 83 + 1 + 551 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (268315513) and next prime (268315517).

Together with 252734468 it forms a betrothed pair.

It is not a de Polignac number, because 268315515 - 2¹ = 268315513 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 268315515.

It is not an unprimeable number, because it can be changed into a prime (268315513) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2604954 + ... + 2605056.

It is an arithmetic number, because the mean of its divisors is an integer number (5427604).

Almost surely, 2^268315515 is an apocalyptic number.

268315515 is a deficient number, since it is larger than the sum of its proper divisors (252734469).

268315515 is a wasteful number, since it uses less digits than its factorization.

268315515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 258 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 268315515 is about 16380.3392822005. The cubic root of 268315515 is about 644.9834861465.

The spelling of 268315515 in words is "two hundred sixty-eight million, three hundred fifteen thousand, five hundred fifteen".