1996791 has 16 divisors (see below), whose sum is σ = 2846976. Its totient is φ = 1241856.

The previous prime is 1996781. The next prime is 1996793. The reversal of 1996791 is 1976991.

1996791 = T₂₈₃ + T₂₈₄ + ... + T₃₂₅.

It is not a de Polignac number, because 1996791 - 2⁵ = 1996759 is a prime.

1996791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2631 + ... + 3303.

It is an arithmetic number, because the mean of its divisors is an integer number (177936).

2^1996791 is an apocalyptic number.

1996791 is a deficient number, since it is larger than the sum of its proper divisors (850185).

1996791 is a wasteful number, since it uses less digits than its factorization.

1996791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its digits is 30618, while the sum is 42.

The square root of 1996791 is about 1413.0785540797. The cubic root of 1996791 is about 125.9246841402.

The spelling of 1996791 in words is "one million, nine hundred ninety-six thousand, seven hundred ninety-one".