2644620 has 48 divisors (see below), whose sum is σ = 8080128. Its totient is φ = 640960.

The previous prime is 2644619. The next prime is 2644627. The reversal of 2644620 is 264462.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2644627) 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, 1344 + ... + 2663.

It is an arithmetic number, because the mean of its divisors is an integer number (168336).

2^2644620 is an apocalyptic number.

2644620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2644620 is an abundant number, since it is smaller than the sum of its proper divisors (5435508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2644620 is a wasteful number, since it uses less digits than its factorization.

2644620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030 (or 4028 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2644620 is about 1626.2287661950. The cubic root of 2644620 is about 138.2890392210.

It can be divided in two parts, 264 and 4620, that added together give a palindrome (4884).

The spelling of 2644620 in words is "two million, six hundred forty-four thousand, six hundred twenty".