2644621014 has 64 divisors (see below), whose sum is σ = 6408294912. Its totient is φ = 710284800.

The previous prime is 2644621013. The next prime is 2644621019. The reversal of 2644621014 is 4101264462.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644621013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 755809 + ... + 759299.

It is an arithmetic number, because the mean of its divisors is an integer number (100129608).

Almost surely, 2^2644621014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2644621014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3204147456).

2644621014 is an abundant number, since it is smaller than the sum of its proper divisors (3763673898).

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

2644621014 is a wasteful number, since it uses less digits than its factorization.

2644621014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 2644621014 is about 51425.8788354657. The cubic root of 2644621014 is about 1382.8905689523.

Adding to 2644621014 its reverse (4101264462), we get a palindrome (6745885476).

The spelling of 2644621014 in words is "two billion, six hundred forty-four million, six hundred twenty-one thousand, fourteen".