2721649679 has 12 divisors (see below), whose sum is σ = 3213258264. Its totient is φ = 2298021264.

The previous prime is 2721649643. The next prime is 2721649703. The reversal of 2721649679 is 9769461272.

It is not a de Polignac number, because 2721649679 - 2¹⁶ = 2721584143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2721649679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721649979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411224 + ... + 417789.

It is an arithmetic number, because the mean of its divisors is an integer number (267771522).

Almost surely, 2^2721649679 is an apocalyptic number.

2721649679 is a deficient number, since it is larger than the sum of its proper divisors (491608585).

2721649679 is an equidigital number, since it uses as much as digits as its factorization.

2721649679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829094 (or 829087 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 53.

The square root of 2721649679 is about 52169.4324197609. The cubic root of 2721649679 is about 1396.1885579232.

The spelling of 2721649679 in words is "two billion, seven hundred twenty-one million, six hundred forty-nine thousand, six hundred seventy-nine".