268361657 has 4 divisors (see below), whose sum is σ = 271758720. Its totient is φ = 264964596.

The previous prime is 268361647. The next prime is 268361683. The reversal of 268361657 is 756163862.

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.

It is a cyclic number.

It is not a de Polignac number, because 268361657 - 2⁶ = 268361593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268361647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698413 + ... + 1698570.

It is an arithmetic number, because the mean of its divisors is an integer number (67939680).

Almost surely, 2^268361657 is an apocalyptic number.

It is an amenable number.

268361657 is a deficient number, since it is larger than the sum of its proper divisors (3397063).

268361657 is an equidigital number, since it uses as much as digits as its factorization.

268361657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397062.

The product of its digits is 362880, while the sum is 44.

The square root of 268361657 is about 16381.7476784377. The cubic root of 268361657 is about 645.0204564551.

The spelling of 268361657 in words is "two hundred sixty-eight million, three hundred sixty-one thousand, six hundred fifty-seven".