1996570 has 8 divisors (see below), whose sum is σ = 3593844. Its totient is φ = 798624.

The previous prime is 1996559. The next prime is 1996573. The reversal of 1996570 is 756991.

It is a Cunningham number, because it is equal to 1413²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1996569 + 1 = 1413^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1996573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99819 + ... + 99838.

2^1996570 is an apocalyptic number.

1996570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1996570 is a deficient number, since it is larger than the sum of its proper divisors (1597274).

1996570 is a wasteful number, since it uses less digits than its factorization.

1996570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199664.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 1996570 is about 1413.0003538570. Note that the first 3 decimals coincide. The cubic root of 1996570 is about 125.9200382890.

The spelling of 1996570 in words is "one million, nine hundred ninety-six thousand, five hundred seventy".