1996546 has 4 divisors (see below), whose sum is σ = 2994822. Its totient is φ = 998272.

The previous prime is 1996543. The next prime is 1996549. The reversal of 1996546 is 6456991.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1996543) and next prime (1996549).

It can be written as a sum of positive squares in only one way, i.e., 1990921 + 5625 = 1411^2 + 75^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1996499 and 1996508.

It is not an unprimeable number, because it can be changed into a prime (1996543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499135 + ... + 499138.

2^1996546 is an apocalyptic number.

1996546 is a deficient number, since it is larger than the sum of its proper divisors (998276).

1996546 is an equidigital number, since it uses as much as digits as its factorization.

1996546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998275.

The product of its digits is 58320, while the sum is 40.

The square root of 1996546 is about 1412.9918612646. The cubic root of 1996546 is about 125.9195337415.

The spelling of 1996546 in words is "one million, nine hundred ninety-six thousand, five hundred forty-six".