2689343646 has 16 divisors (see below), whose sum is σ = 5867659008. Its totient is φ = 814952600.

The previous prime is 2689343641. The next prime is 2689343659. The reversal of 2689343646 is 6463439862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689343641) 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 7 ways as a sum of consecutive naturals, for example, 20373750 + ... + 20373881.

It is an arithmetic number, because the mean of its divisors is an integer number (366728688).

Almost surely, 2^2689343646 is an apocalyptic number.

2689343646 is an abundant number, since it is smaller than the sum of its proper divisors (3178315362).

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

2689343646 is a wasteful number, since it uses less digits than its factorization.

2689343646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40747647.

The product of its digits is 4478976, while the sum is 51.

The square root of 2689343646 is about 51858.8820357709. The cubic root of 2689343646 is about 1390.6422934354.

The spelling of 2689343646 in words is "two billion, six hundred eighty-nine million, three hundred forty-three thousand, six hundred forty-six".