268746221 has 4 divisors (see below), whose sum is σ = 268884000. Its totient is φ = 268608444.

The previous prime is 268746211. The next prime is 268746227. The reversal of 268746221 is 122647862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122647862 = 2 ⋅61323931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268746221 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 (268746227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65921 + ... + 69878.

It is an arithmetic number, because the mean of its divisors is an integer number (67221000).

Almost surely, 2^268746221 is an apocalyptic number.

It is an amenable number.

268746221 is a deficient number, since it is larger than the sum of its proper divisors (137779).

268746221 is a wasteful number, since it uses less digits than its factorization.

268746221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137778.

The product of its digits is 64512, while the sum is 38.

The square root of 268746221 is about 16393.4810519304. The cubic root of 268746221 is about 645.3284155693.

The spelling of 268746221 in words is "two hundred sixty-eight million, seven hundred forty-six thousand, two hundred twenty-one".