122578263 has 6 divisors (see below), whose sum is σ = 177057504. Its totient is φ = 81718836.

The previous prime is 122578249. The next prime is 122578289. The reversal of 122578263 is 362875221.

122578263 is a `hidden beast` number, since 1 + 22 + 578 + 2 + 63 = 666.

It is not a de Polignac number, because 122578263 - 2⁵ = 122578231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122578213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6809895 + ... + 6809912.

It is an arithmetic number, because the mean of its divisors is an integer number (29509584).

Almost surely, 2^122578263 is an apocalyptic number.

122578263 is a deficient number, since it is larger than the sum of its proper divisors (54479241).

122578263 is a wasteful number, since it uses less digits than its factorization.

122578263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13619813 (or 13619810 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 122578263 is about 11071.5068080185. The cubic root of 122578263 is about 496.7499372916.

The spelling of 122578263 in words is "one hundred twenty-two million, five hundred seventy-eight thousand, two hundred sixty-three".