268690073 has 4 divisors (see below), whose sum is σ = 270054180. Its totient is φ = 267325968.

The previous prime is 268690069. The next prime is 268690091. The reversal of 268690073 is 370096862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370096862 = 2 ⋅185048431.

It can be written as a sum of positive squares in 2 ways, for example, as 227768464 + 40921609 = 15092^2 + 6397^2 .

It is a cyclic number.

It is not a de Polignac number, because 268690073 - 2² = 268690069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 268690073.

It is not an unprimeable number, because it can be changed into a prime (268690013) by changing a digit.

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, 681758 + ... + 682151.

It is an arithmetic number, because the mean of its divisors is an integer number (67513545).

Almost surely, 2^268690073 is an apocalyptic number.

It is an amenable number.

268690073 is a deficient number, since it is larger than the sum of its proper divisors (1364107).

268690073 is a wasteful number, since it uses less digits than its factorization.

268690073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364106.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 268690073 is about 16391.7684524886. The cubic root of 268690073 is about 645.2834705360.

The spelling of 268690073 in words is "two hundred sixty-eight million, six hundred ninety thousand, seventy-three".