2640116 has 6 divisors (see below), whose sum is σ = 4620210. Its totient is φ = 1320056.

The previous prime is 2640067. The next prime is 2640137. The reversal of 2640116 is 6110462.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2390116 + 250000 = 1546^2 + 500^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330011 + ... + 330018.

It is an arithmetic number, because the mean of its divisors is an integer number (770035).

2^2640116 is an apocalyptic number.

It is an amenable number.

2640116 is a deficient number, since it is larger than the sum of its proper divisors (1980094).

2640116 is a wasteful number, since it uses less digits than its factorization.

2640116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660033 (or 660031 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2640116 is about 1624.8433770675. The cubic root of 2640116 is about 138.2104888360.

Adding to 2640116 its reverse (6110462), we get a palindrome (8750578).

The spelling of 2640116 in words is "two million, six hundred forty thousand, one hundred sixteen".