120691764 has 72 divisors (see below), whose sum is σ = 322987392. Its totient is φ = 37920960.

The previous prime is 120691763. The next prime is 120691793. The reversal of 120691764 is 467196021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120691763) 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 23 ways as a sum of consecutive naturals, for example, 57762 + ... + 59814.

It is an arithmetic number, because the mean of its divisors is an integer number (4485936).

Almost surely, 2^120691764 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 120691764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161493696).

120691764 is an abundant number, since it is smaller than the sum of its proper divisors (202295628).

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

120691764 is a wasteful number, since it uses less digits than its factorization.

120691764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 120691764 is about 10985.9803385952. The cubic root of 120691764 is about 494.1883976021.

The spelling of 120691764 in words is "one hundred twenty million, six hundred ninety-one thousand, seven hundred sixty-four".