2686646884 has 36 divisors (see below), whose sum is σ = 5166754740. Its totient is φ = 1220692480.

The previous prime is 2686646881. The next prime is 2686646891. The reversal of 2686646884 is 4886466862.

It can be written as a sum of positive squares in 6 ways, for example, as 155550784 + 2531096100 = 12472^2 + 50310^2 .

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (2686646881) 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, 6547 + ... + 73594.

It is an arithmetic number, because the mean of its divisors is an integer number (143520965).

Almost surely, 2^2686646884 is an apocalyptic number.

It is an amenable number.

2686646884 is a deficient number, since it is larger than the sum of its proper divisors (2480107856).

2686646884 is a wasteful number, since it uses less digits than its factorization.

2686646884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80208 (or 80189 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 58.

The square root of 2686646884 is about 51832.8745488807. The cubic root of 2686646884 is about 1390.1773118872.

The spelling of 2686646884 in words is "two billion, six hundred eighty-six million, six hundred forty-six thousand, eight hundred eighty-four".