1996587 has 12 divisors (see below), whose sum is σ = 2903784. Its totient is φ = 1321920.

The previous prime is 1996583. The next prime is 1996609. The reversal of 1996587 is 7856991.

It is not a de Polignac number, because 1996587 - 2² = 1996583 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1996583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 787 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (241982).

2^1996587 is an apocalyptic number.

1996587 is a deficient number, since it is larger than the sum of its proper divisors (907197).

1996587 is a wasteful number, since it uses less digits than its factorization.

1996587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530 (or 1527 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 1996587 is about 1413.0063694124. The cubic root of 1996587 is about 125.9203956743.

It can be divided in two parts, 199 and 6587, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 1996587 in words is "one million, nine hundred ninety-six thousand, five hundred eighty-seven".