2628645 has 16 divisors (see below), whose sum is σ = 4342272. Its totient is φ = 1356480.

The previous prime is 2628617. The next prime is 2628649. The reversal of 2628645 is 5468262.

It is not a de Polignac number, because 2628645 - 2⁶ = 2628581 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁴ + 2²¹ + 8³ + 6⁴ + 4⁶ + 5 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2362 + ... + 3291.

It is an arithmetic number, because the mean of its divisors is an integer number (271392).

2^2628645 is an apocalyptic number.

It is an amenable number.

2628645 is a deficient number, since it is larger than the sum of its proper divisors (1713627).

2628645 is a wasteful number, since it uses less digits than its factorization.

2628645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692.

The product of its digits is 23040, while the sum is 33.

The square root of 2628645 is about 1621.3096558030. The cubic root of 2628645 is about 138.0100286768.

The spelling of 2628645 in words is "two million, six hundred twenty-eight thousand, six hundred forty-five".