268914521 has 8 divisors (see below), whose sum is σ = 270474120. Its totient is φ = 267359872.

The previous prime is 268914509. The next prime is 268914539. The reversal of 268914521 is 125419862.

It can be written as a sum of positive squares in 4 ways, for example, as 72914521 + 196000000 = 8539^2 + 14000^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268914521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268916521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165911 + ... + 167523.

It is an arithmetic number, because the mean of its divisors is an integer number (33809265).

Almost surely, 2^268914521 is an apocalyptic number.

It is an amenable number.

268914521 is a deficient number, since it is larger than the sum of its proper divisors (1559599).

268914521 is a wasteful number, since it uses less digits than its factorization.

268914521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475.

The product of its digits is 34560, while the sum is 38.

The square root of 268914521 is about 16398.6133865031. The cubic root of 268914521 is about 645.4630979078.

The spelling of 268914521 in words is "two hundred sixty-eight million, nine hundred fourteen thousand, five hundred twenty-one".