268920651 has 4 divisors (see below), whose sum is σ = 358560872. Its totient is φ = 179280432.

The previous prime is 268920611. The next prime is 268920689. The reversal of 268920651 is 156029862.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 268920651 - 2¹³ = 268912459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268920611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44820106 + ... + 44820111.

It is an arithmetic number, because the mean of its divisors is an integer number (89640218).

Almost surely, 2^268920651 is an apocalyptic number.

268920651 is a deficient number, since it is larger than the sum of its proper divisors (89640221).

268920651 is an equidigital number, since it uses as much as digits as its factorization.

268920651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89640220.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 268920651 is about 16398.8002914847. The cubic root of 268920651 is about 645.4680023891.

The spelling of 268920651 in words is "two hundred sixty-eight million, nine hundred twenty thousand, six hundred fifty-one".