2006690 has 32 divisors (see below), whose sum is σ = 4181760. Its totient is φ = 679104.

The previous prime is 2006689. The next prime is 2006707. The reversal of 2006690 is 966002.

It is a super-2 number, since 2×2006690² = 8053609512200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7499 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (130680).

2^2006690 is an apocalyptic number.

2006690 is an abundant number, since it is smaller than the sum of its proper divisors (2175070).

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

2006690 is a wasteful number, since it uses less digits than its factorization.

2006690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2006690 is about 1416.5768598985. The cubic root of 2006690 is about 126.1324298405.

The spelling of 2006690 in words is "two million, six thousand, six hundred ninety".