2622645 has 16 divisors (see below), whose sum is σ = 4662720. Its totient is φ = 1398672.

The previous prime is 2622637. The next prime is 2622679. The reversal of 2622645 is 5462262.

It is not a de Polignac number, because 2622645 - 2³ = 2622637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2⁹ + 6³ + 2¹⁹ + 2²¹ + 6³ + 4⁴ + 5 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9579 + ... + 9848.

It is an arithmetic number, because the mean of its divisors is an integer number (291420).

2^2622645 is an apocalyptic number.

It is an amenable number.

2622645 is a deficient number, since it is larger than the sum of its proper divisors (2040075).

2622645 is a wasteful number, since it uses less digits than its factorization.

2622645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19441 (or 19435 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 2622645 is about 1619.4582427466. The cubic root of 2622645 is about 137.9049439911.

The spelling of 2622645 in words is "two million, six hundred twenty-two thousand, six hundred forty-five".