1200655580 has 12 divisors (see below), whose sum is σ = 2521376760. Its totient is φ = 480262224.

The previous prime is 1200655571. The next prime is 1200655597. The reversal of 1200655580 is 855560021.

It is a super-3 number, since 3×1200655580³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30016370 + ... + 30016409.

It is an arithmetic number, because the mean of its divisors is an integer number (210114730).

Almost surely, 2^1200655580 is an apocalyptic number.

1200655580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200655580 is an abundant number, since it is smaller than the sum of its proper divisors (1320721180).

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

1200655580 is a wasteful number, since it uses less digits than its factorization.

1200655580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60032788 (or 60032786 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 1200655580 is about 34650.4773415894. The cubic root of 1200655580 is about 1062.8520499821.

The spelling of 1200655580 in words is "one billion, two hundred million, six hundred fifty-five thousand, five hundred eighty".