2087686 has 4 divisors (see below), whose sum is σ = 3131532. Its totient is φ = 1043842.

The previous prime is 2087671. The next prime is 2087689. The reversal of 2087686 is 6867802.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087689) 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 as a sum of consecutive naturals, namely, 521920 + ... + 521923.

It is an arithmetic number, because the mean of its divisors is an integer number (782883).

2^2087686 is an apocalyptic number.

2087686 is a deficient number, since it is larger than the sum of its proper divisors (1043846).

2087686 is a wasteful number, since it uses less digits than its factorization.

2087686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043845.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2087686 is about 1444.8826942005. The cubic root of 2087686 is about 127.8071232467.

The spelling of 2087686 in words is "two million, eighty-seven thousand, six hundred eighty-six".