122791660 has 48 divisors (see below), whose sum is σ = 267708672. Its totient is φ = 47275200.

The previous prime is 122791657. The next prime is 122791681. The reversal of 122791660 is 66197221.

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, 60055 + ... + 62065.

It is an arithmetic number, because the mean of its divisors is an integer number (5577264).

Almost surely, 2^122791660 is an apocalyptic number.

122791660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122791660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133854336).

122791660 is an abundant number, since it is smaller than the sum of its proper divisors (144917012).

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

122791660 is a wasteful number, since it uses less digits than its factorization.

122791660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2132 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 122791660 is about 11081.1398330677. The cubic root of 122791660 is about 497.0380348395.

The spelling of 122791660 in words is "one hundred twenty-two million, seven hundred ninety-one thousand, six hundred sixty".