123666804 has 48 divisors (see below), whose sum is σ = 322459200. Its totient is φ = 40985568.

The previous prime is 123666797. The next prime is 123666827. The reversal of 123666804 is 408666321.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16134 + ... + 22530.

It is an arithmetic number, because the mean of its divisors is an integer number (6717900).

Almost surely, 2^123666804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123666804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161229600).

123666804 is an abundant number, since it is smaller than the sum of its proper divisors (198792396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123666804 is a wasteful number, since it uses less digits than its factorization.

123666804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6589 (or 6581 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 123666804 is about 11120.5577198268. The cubic root of 123666804 is about 498.2160479332.

The spelling of 123666804 in words is "one hundred twenty-three million, six hundred sixty-six thousand, eight hundred four".