2606669 has 4 divisors (see below), whose sum is σ = 2807196. Its totient is φ = 2406144.

The previous prime is 2606651. The next prime is 2606677. The reversal of 2606669 is 9666062.

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

It can be written as a sum of positive squares in 2 ways, for example, as 469225 + 2137444 = 685^2 + 1462^2 .

It is not a de Polignac number, because 2606669 - 2¹² = 2602573 is a prime.

It is a super-2 number, since 2×2606669² = 13589446551122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606069) 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, 100244 + ... + 100269.

It is an arithmetic number, because the mean of its divisors is an integer number (701799).

2^2606669 is an apocalyptic number.

It is an amenable number.

2606669 is a deficient number, since it is larger than the sum of its proper divisors (200527).

2606669 is a wasteful number, since it uses less digits than its factorization.

2606669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200526.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 2606669 is about 1614.5181943849. The cubic root of 2606669 is about 137.6243547176.

The spelling of 2606669 in words is "two million, six hundred six thousand, six hundred sixty-nine".