123165660 has 48 divisors (see below), whose sum is σ = 346421376. Its totient is φ = 32695872.

The previous prime is 123165643. The next prime is 123165671. The reversal of 123165660 is 66561321.

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

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, 9099 + ... + 18141.

It is an arithmetic number, because the mean of its divisors is an integer number (7217112).

Almost surely, 2^123165660 is an apocalyptic number.

123165660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123165660 is an abundant number, since it is smaller than the sum of its proper divisors (223255716).

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

123165660 is a wasteful number, since it uses less digits than its factorization.

123165660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9282 (or 9280 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 123165660 is about 11098.0025229768. The cubic root of 123165660 is about 497.5421510880.

The spelling of 123165660 in words is "one hundred twenty-three million, one hundred sixty-five thousand, six hundred sixty".