1201559760 has 60 divisors (see below), whose sum is σ = 4035240612. Its totient is φ = 320415744.

The previous prime is 1201559741. The next prime is 1201559773. The reversal of 1201559760 is 679551021.

1201559760 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 5 + 597 + 60 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 754491024 + 447068736 = 27468^2 + 21144^2 .

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 833697 + ... + 835136.

Almost surely, 2^1201559760 is an apocalyptic number.

1201559760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201559760 is an abundant number, since it is smaller than the sum of its proper divisors (2833680852).

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

1201559760 is a wasteful number, since it uses less digits than its factorization.

1201559760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668852 (or 1668843 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 1201559760 is about 34663.5220368617. The cubic root of 1201559760 is about 1063.1187843803.

The spelling of 1201559760 in words is "one billion, two hundred one million, five hundred fifty-nine thousand, seven hundred sixty".