123263564 has 48 divisors (see below), whose sum is σ = 236974080. Its totient is φ = 55883520.

The previous prime is 123263561. The next prime is 123263579. The reversal of 123263564 is 465362321.

It is a self number, because there is not a number n which added to its sum of digits gives 123263564.

It is not an unprimeable number, because it can be changed into a prime (123263561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265997 + ... + 266459.

It is an arithmetic number, because the mean of its divisors is an integer number (4936960).

Almost surely, 2^123263564 is an apocalyptic number.

It is an amenable number.

123263564 is a deficient number, since it is larger than the sum of its proper divisors (113710516).

123263564 is a wasteful number, since it uses less digits than its factorization.

123263564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 628 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 123263564 is about 11102.4125306169. The cubic root of 123263564 is about 497.6739477420.

The spelling of 123263564 in words is "one hundred twenty-three million, two hundred sixty-three thousand, five hundred sixty-four".