2287621 has 8 divisors (see below), whose sum is σ = 2625984. Its totient is φ = 1952160.

The previous prime is 2287613. The next prime is 2287627. The reversal of 2287621 is 1267822.

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

It is not a de Polignac number, because 2287621 - 2³ = 2287613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2287621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287627) 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, 1386 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (328248).

2^2287621 is an apocalyptic number.

It is an amenable number.

2287621 is a deficient number, since it is larger than the sum of its proper divisors (338363).

2287621 is a wasteful number, since it uses less digits than its factorization.

2287621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451.

The product of its digits is 2688, while the sum is 28.

The square root of 2287621 is about 1512.4883470625. The cubic root of 2287621 is about 131.7633692912.

The spelling of 2287621 in words is "two million, two hundred eighty-seven thousand, six hundred twenty-one".