1996387 has 8 divisors (see below), whose sum is σ = 2116800. Its totient is φ = 1877544.

The previous prime is 1996381. The next prime is 1996391. The reversal of 1996387 is 7836991.

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 1996387 - 2¹¹ = 1994339 is a prime.

It is a super-2 number, since 2×1996387² = 7971122107538, which contains 22 as substring.

It is a Duffinian number.

1996387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1996381) 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 7 ways as a sum of consecutive naturals, for example, 3108 + ... + 3694.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

2^1996387 is an apocalyptic number.

1996387 is a deficient number, since it is larger than the sum of its proper divisors (120413).

1996387 is a wasteful number, since it uses less digits than its factorization.

1996387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its digits is 81648, while the sum is 43.

The square root of 1996387 is about 1412.9355965507. The cubic root of 1996387 is about 125.9161910124.

The spelling of 1996387 in words is "one million, nine hundred ninety-six thousand, three hundred eighty-seven".