268464421 has 4 divisors (see below), whose sum is σ = 269462700. Its totient is φ = 267466144.

The previous prime is 268464409. The next prime is 268464431. The reversal of 268464421 is 124464862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124464862 = 2 ⋅62232431.

It can be written as a sum of positive squares in 2 ways, for example, as 34680321 + 233784100 = 5889^2 + 15290^2 .

It is a cyclic number.

It is not a de Polignac number, because 268464421 - 2⁵ = 268464389 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 (268464401) 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, 498736 + ... + 499273.

It is an arithmetic number, because the mean of its divisors is an integer number (67365675).

Almost surely, 2^268464421 is an apocalyptic number.

It is an amenable number.

268464421 is a deficient number, since it is larger than the sum of its proper divisors (998279).

268464421 is an equidigital number, since it uses as much as digits as its factorization.

268464421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998278.

The product of its digits is 73728, while the sum is 37.

The square root of 268464421 is about 16384.8839178067. The cubic root of 268464421 is about 645.1027787261.

The spelling of 268464421 in words is "two hundred sixty-eight million, four hundred sixty-four thousand, four hundred twenty-one".