2690806 has 8 divisors (see below), whose sum is σ = 4057704. Its totient is φ = 1338240.

The previous prime is 2690803. The next prime is 2690827. The reversal of 2690806 is 6080962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2690806³ = 58447833398658379848, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690803) 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, 3100 + ... + 3871.

It is an arithmetic number, because the mean of its divisors is an integer number (507213).

2^2690806 is an apocalyptic number.

2690806 is a deficient number, since it is larger than the sum of its proper divisors (1366898).

2690806 is a wasteful number, since it uses less digits than its factorization.

2690806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7166.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2690806 is about 1640.3676417194. The cubic root of 2690806 is about 139.0894305711.

The spelling of 2690806 in words is "two million, six hundred ninety thousand, eight hundred six".