1996635 has 8 divisors (see below), whose sum is σ = 3194640. Its totient is φ = 1064864.

The previous prime is 1996613. The next prime is 1996639. The reversal of 1996635 is 5366991.

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

It is a cyclic number.

It is not a de Polignac number, because 1996635 - 2⁷ = 1996507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1996593 and 1996602.

It is not an unprimeable number, because it can be changed into a prime (1996639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66540 + ... + 66569.

It is an arithmetic number, because the mean of its divisors is an integer number (399330).

2^1996635 is an apocalyptic number.

1996635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1996635 is a deficient number, since it is larger than the sum of its proper divisors (1198005).

1996635 is a wasteful number, since it uses less digits than its factorization.

1996635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133117.

The product of its digits is 43740, while the sum is 39.

The square root of 1996635 is about 1413.0233543718. The cubic root of 1996635 is about 125.9214047514.

The spelling of 1996635 in words is "one million, nine hundred ninety-six thousand, six hundred thirty-five".