2606691 has 8 divisors (see below), whose sum is σ = 3487824. Its totient is φ = 1731680.

The previous prime is 2606683. The next prime is 2606693. The reversal of 2606691 is 1966062.

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

It is a cyclic number.

It is not a de Polignac number, because 2606691 - 2³ = 2606683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2606693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (435978).

2^2606691 is an apocalyptic number.

2606691 is a deficient number, since it is larger than the sum of its proper divisors (881133).

2606691 is a wasteful number, since it uses less digits than its factorization.

2606691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2606691 is about 1614.5250075487. The cubic root of 2606691 is about 137.6247418946.

The spelling of 2606691 in words is "two million, six hundred six thousand, six hundred ninety-one".