1982687 has 12 divisors (see below), whose sum is σ = 2362536. Its totient is φ = 1658160.

The previous prime is 1982681. The next prime is 1982713. The reversal of 1982687 is 7862891.

It is not a de Polignac number, because 1982687 - 2⁴ = 1982671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982681) 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, 1637 + ... + 2577.

It is an arithmetic number, because the mean of its divisors is an integer number (196878).

2^1982687 is an apocalyptic number.

1982687 is a deficient number, since it is larger than the sum of its proper divisors (379849).

1982687 is an equidigital number, since it uses as much as digits as its factorization.

1982687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 991 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 1982687 is about 1408.0791881141. The cubic root of 1982687 is about 125.6275006722.

The spelling of 1982687 in words is "one million, nine hundred eighty-two thousand, six hundred eighty-seven".