1099580 has 12 divisors (see below), whose sum is σ = 2309160. Its totient is φ = 439824.

The previous prime is 1099573. The next prime is 1099589. The reversal of 1099580 is 859901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27470 + ... + 27509.

It is an arithmetic number, because the mean of its divisors is an integer number (192430).

2^1099580 is an apocalyptic number.

1099580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099580 is an abundant number, since it is smaller than the sum of its proper divisors (1209580).

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

1099580 is a wasteful number, since it uses less digits than its factorization.

1099580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54988 (or 54986 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 1099580 is about 1048.6086019102. The cubic root of 1099580 is about 103.2148717626.

The spelling of 1099580 in words is "one million, ninety-nine thousand, five hundred eighty".