120870666 has 96 divisors (see below), whose sum is σ = 326102400. Its totient is φ = 31570560.

The previous prime is 120870641. The next prime is 120870667. The reversal of 120870666 is 666078021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 120870666.

It is not an unprimeable number, because it can be changed into a prime (120870667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68556 + ... + 70296.

It is an arithmetic number, because the mean of its divisors is an integer number (3396900).

Almost surely, 2^120870666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120870666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163051200).

120870666 is an abundant number, since it is smaller than the sum of its proper divisors (205231734).

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

120870666 is a wasteful number, since it uses less digits than its factorization.

120870666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 120870666 is about 10994.1196100461. The cubic root of 120870666 is about 494.4324563558.

The spelling of 120870666 in words is "one hundred twenty million, eight hundred seventy thousand, six hundred sixty-six".