268620455 has 4 divisors (see below), whose sum is σ = 322344552. Its totient is φ = 214896360.

The previous prime is 268620439. The next prime is 268620493. The reversal of 268620455 is 554026862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554026862 = 2 ⋅277013431.

It is not a de Polignac number, because 268620455 - 2⁴ = 268620439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26862041 + ... + 26862050.

It is an arithmetic number, because the mean of its divisors is an integer number (80586138).

Almost surely, 2^268620455 is an apocalyptic number.

268620455 is a deficient number, since it is larger than the sum of its proper divisors (53724097).

268620455 is an equidigital number, since it uses as much as digits as its factorization.

268620455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53724096.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 268620455 is about 16389.6447490481. The cubic root of 268620455 is about 645.2277344177.

The spelling of 268620455 in words is "two hundred sixty-eight million, six hundred twenty thousand, four hundred fifty-five".