2026621 has 8 divisors (see below), whose sum is σ = 2169720. Its totient is φ = 1886208.

The previous prime is 2026613. The next prime is 2026627. The reversal of 2026621 is 1266202.

It can be written as a sum of positive squares in 4 ways, for example, as 1144900 + 881721 = 1070^2 + 939^2 .

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 2026621 - 2³ = 2026613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2026627) 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, 1035 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (271215).

2^2026621 is an apocalyptic number.

It is an amenable number.

2026621 is a deficient number, since it is larger than the sum of its proper divisors (143099).

2026621 is a wasteful number, since it uses less digits than its factorization.

2026621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2026621 is about 1423.5943944818. The cubic root of 2026621 is about 126.5486489237.

The spelling of 2026621 in words is "two million, twenty-six thousand, six hundred twenty-one".