1996580 has 12 divisors (see below), whose sum is σ = 4192860. Its totient is φ = 798624.

The previous prime is 1996573. The next prime is 1996583. The reversal of 1996580 is 856991.

It can be written as a sum of positive squares in 2 ways, for example, as 964324 + 1032256 = 982^2 + 1016^2 .

It is not an unprimeable number, because it can be changed into a prime (1996583) 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, 49895 + ... + 49934.

It is an arithmetic number, because the mean of its divisors is an integer number (349405).

2^1996580 is an apocalyptic number.

1996580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1996580 is an abundant number, since it is smaller than the sum of its proper divisors (2196280).

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

1996580 is a wasteful number, since it uses less digits than its factorization.

1996580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99838 (or 99836 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1996580 is about 1413.0038924221. The cubic root of 1996580 is about 125.9202485159.

The spelling of 1996580 in words is "one million, nine hundred ninety-six thousand, five hundred eighty".