1120785660 has 60 divisors (see below), whose sum is σ = 3515951208. Its totient is φ = 298875744.

The previous prime is 1120785643. The next prime is 1120785691. The reversal of 1120785660 is 665870211.

1120785660 is a `hidden beast` number, since 1 + 1 + 20 + 78 + 566 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 344302 + ... + 347541.

Almost surely, 2^1120785660 is an apocalyptic number.

1120785660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120785660 is an abundant number, since it is smaller than the sum of its proper divisors (2395165548).

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

1120785660 is a wasteful number, since it uses less digits than its factorization.

1120785660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691864 (or 691853 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1120785660 is about 33478.1370449432. The cubic root of 1120785660 is about 1038.7415930715.

The spelling of 1120785660 in words is "one billion, one hundred twenty million, seven hundred eighty-five thousand, six hundred sixty".