2621089 has 4 divisors (see below), whose sum is σ = 2685060. Its totient is φ = 2557120.

The previous prime is 2621063. The next prime is 2621119. The reversal of 2621089 is 9801262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9801262 = 2 ⋅4900631.

It can be written as a sum of positive squares in 2 ways, for example, as 187489 + 2433600 = 433^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 2621089 - 2⁹ = 2620577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621789) 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, 31924 + ... + 32005.

It is an arithmetic number, because the mean of its divisors is an integer number (671265).

2^2621089 is an apocalyptic number.

It is an amenable number.

2621089 is a deficient number, since it is larger than the sum of its proper divisors (63971).

2621089 is an equidigital number, since it uses as much as digits as its factorization.

2621089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63970.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2621089 is about 1618.9777638992. The cubic root of 2621089 is about 137.8776658625.

It can be divided in two parts, 26 and 21089, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 2621089 in words is "two million, six hundred twenty-one thousand, eighty-nine".