2081586 has 16 divisors (see below), whose sum is σ = 4483584. Its totient is φ = 640464.

The previous prime is 2081581. The next prime is 2081603. The reversal of 2081586 is 6851802.

It is not an unprimeable number, because it can be changed into a prime (2081581) 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, 13266 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (280224).

2^2081586 is an apocalyptic number.

2081586 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2081586 is an abundant number, since it is smaller than the sum of its proper divisors (2401998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2081586 is a wasteful number, since it uses less digits than its factorization.

2081586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26705.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 2081586 is about 1442.7702519805. The cubic root of 2081586 is about 127.6825221313.

The spelling of 2081586 in words is "two million, eighty-one thousand, five hundred eighty-six".