1080665600 has 180 divisors, whose sum is σ = 3116373084. Its totient is φ = 370298880.

The previous prime is 1080665591. The next prime is 1080665633. The reversal of 1080665600 is 65660801.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 626339 + ... + 628061.

Almost surely, 2^1080665600 is an apocalyptic number.

1080665600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1080665600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558186542).

1080665600 is an abundant number, since it is smaller than the sum of its proper divisors (2035707484).

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

1080665600 is an equidigital number, since it uses as much as digits as its factorization.

1080665600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1080665600 is about 32873.4786720237. The cubic root of 1080665600 is about 1026.1962950904.

The spelling of 1080665600 in words is "one billion, eighty million, six hundred sixty-five thousand, six hundred".