123813660 has 24 divisors (see below), whose sum is σ = 346678416. Its totient is φ = 33016960.

The previous prime is 123813653. The next prime is 123813661. The reversal of 123813660 is 66318321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123813661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031721 + ... + 1031840.

It is an arithmetic number, because the mean of its divisors is an integer number (14444934).

Almost surely, 2^123813660 is an apocalyptic number.

123813660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123813660 is an abundant number, since it is smaller than the sum of its proper divisors (222864756).

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

123813660 is a wasteful number, since it uses less digits than its factorization.

123813660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063573 (or 2063571 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 123813660 is about 11127.1586669733. The cubic root of 123813660 is about 498.4131826824.

The spelling of 123813660 in words is "one hundred twenty-three million, eight hundred thirteen thousand, six hundred sixty".