2606631644 has 24 divisors (see below), whose sum is σ = 4626760320. Its totient is φ = 1284788736.

The previous prime is 2606631619. The next prime is 2606631647. The reversal of 2606631644 is 4461366062.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2606631598 and 2606631607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606631647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109109 + ... + 130835.

It is an arithmetic number, because the mean of its divisors is an integer number (192781680).

Almost surely, 2^2606631644 is an apocalyptic number.

It is an amenable number.

2606631644 is a deficient number, since it is larger than the sum of its proper divisors (2020128676).

2606631644 is a wasteful number, since it uses less digits than its factorization.

2606631644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22157 (or 22155 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 2606631644 is about 51055.1823422461. The cubic root of 2606631644 is about 1376.2369728594.

The spelling of 2606631644 in words is "two billion, six hundred six million, six hundred thirty-one thousand, six hundred forty-four".