268812515 has 8 divisors (see below), whose sum is σ = 326461968. Its totient is φ = 212458720.

The previous prime is 268812487. The next prime is 268812529. The reversal of 268812515 is 515218862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268812515 - 2²⁰ = 267763939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323456 + ... + 324285.

It is an arithmetic number, because the mean of its divisors is an integer number (40807746).

Almost surely, 2^268812515 is an apocalyptic number.

268812515 is a deficient number, since it is larger than the sum of its proper divisors (57649453).

268812515 is an equidigital number, since it uses as much as digits as its factorization.

268812515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647829.

The product of its digits is 38400, while the sum is 38.

The square root of 268812515 is about 16395.5028895121. The cubic root of 268812515 is about 645.3814741569.

The spelling of 268812515 in words is "two hundred sixty-eight million, eight hundred twelve thousand, five hundred fifteen".