2087690 has 16 divisors (see below), whose sum is σ = 4099680. Its totient is φ = 759120.

The previous prime is 2087689. The next prime is 2087711. The reversal of 2087690 is 967802.

It is a super-2 number, since 2×2087690² = 8716899072200, which contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 9380 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (256230).

2^2087690 is an apocalyptic number.

2087690 is a deficient number, since it is larger than the sum of its proper divisors (2011990).

2087690 is a wasteful number, since it uses less digits than its factorization.

2087690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18997.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2087690 is about 1444.8840783952. The cubic root of 2087690 is about 127.8072048727.

The spelling of 2087690 in words is "two million, eighty-seven thousand, six hundred ninety".