920268257 has 4 divisors (see below), whose sum is σ = 920365056. Its totient is φ = 920171460.

The previous prime is 920268221. The next prime is 920268269. The reversal of 920268257 is 752862029.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 752862029 = 659 ⋅1142431.

It is a cyclic number.

It is not a de Polignac number, because 920268257 - 2¹⁰ = 920267233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920298257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32369 + ... + 53742.

It is an arithmetic number, because the mean of its divisors is an integer number (230091264).

Almost surely, 2^920268257 is an apocalyptic number.

It is an amenable number.

920268257 is a deficient number, since it is larger than the sum of its proper divisors (96799).

920268257 is a wasteful number, since it uses less digits than its factorization.

920268257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96798.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 920268257 is about 30335.9235395925. The cubic root of 920268257 is about 972.6833473806.

The spelling of 920268257 in words is "nine hundred twenty million, two hundred sixty-eight thousand, two hundred fifty-seven".