268572321 has 8 divisors (see below), whose sum is σ = 397884960. Its totient is φ = 179048196.

The previous prime is 268572299. The next prime is 268572331. The reversal of 268572321 is 123275862.

268572321 is a `hidden beast` number, since 2 + 68 + 572 + 3 + 21 = 666.

It is not a de Polignac number, because 268572321 - 2⁷ = 268572193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268572331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4973535 + ... + 4973588.

It is an arithmetic number, because the mean of its divisors is an integer number (49735620).

Almost surely, 2^268572321 is an apocalyptic number.

It is an amenable number.

268572321 is a deficient number, since it is larger than the sum of its proper divisors (129312639).

268572321 is an equidigital number, since it uses as much as digits as its factorization.

268572321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947132 (or 9947126 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 268572321 is about 16388.1762560695. The cubic root of 268572321 is about 645.1891927425.

The spelling of 268572321 in words is "two hundred sixty-eight million, five hundred seventy-two thousand, three hundred twenty-one".