2026661 has 8 divisors (see below), whose sum is σ = 2494464. Its totient is φ = 1603440.

The previous prime is 2026639. The next prime is 2026663. The reversal of 2026661 is 1666202.

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 2026661 - 2¹⁰ = 2025637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2026663) by changing a digit.

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, 11045 + ... + 11226.

It is an arithmetic number, because the mean of its divisors is an integer number (311808).

2^2026661 is an apocalyptic number.

It is an amenable number.

2026661 is a deficient number, since it is larger than the sum of its proper divisors (467803).

2026661 is a wasteful number, since it uses less digits than its factorization.

2026661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22291.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2026661 is about 1423.6084433579. The cubic root of 2026661 is about 126.5494814938.

The spelling of 2026661 in words is "two million, twenty-six thousand, six hundred sixty-one".