2081487 has 4 divisors (see below), whose sum is σ = 2775320. Its totient is φ = 1387656.

The previous prime is 2081483. The next prime is 2081491. The reversal of 2081487 is 7841802.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2081483) and next prime (2081491).

It is not a de Polignac number, because 2081487 - 2² = 2081483 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346912 + ... + 346917.

It is an arithmetic number, because the mean of its divisors is an integer number (693830).

2^2081487 is an apocalyptic number.

2081487 is a deficient number, since it is larger than the sum of its proper divisors (693833).

2081487 is an equidigital number, since it uses as much as digits as its factorization.

2081487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693832.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 2081487 is about 1442.7359425758. The cubic root of 2081487 is about 127.6804979103.

The spelling of 2081487 in words is "two million, eighty-one thousand, four hundred eighty-seven".