2689303640 has 16 divisors (see below), whose sum is σ = 6050933280. Its totient is φ = 1075721440.

The previous prime is 2689303637. The next prime is 2689303649. The reversal of 2689303640 is 463039862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689303649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33616256 + ... + 33616335.

It is an arithmetic number, because the mean of its divisors is an integer number (378183330).

Almost surely, 2^2689303640 is an apocalyptic number.

2689303640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2689303640 is an abundant number, since it is smaller than the sum of its proper divisors (3361629640).

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

2689303640 is a wasteful number, since it uses less digits than its factorization.

2689303640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67232602 (or 67232598 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 2689303640 is about 51858.4963144903. The cubic root of 2689303640 is about 1390.6353977862.

The spelling of 2689303640 in words is "two billion, six hundred eighty-nine million, three hundred three thousand, six hundred forty".