2660380836 has 72 divisors (see below), whose sum is σ = 6836566464. Its totient is φ = 803563200.

The previous prime is 2660380819. The next prime is 2660380841. The reversal of 2660380836 is 6380830662.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 86286 + ... + 112986.

It is an arithmetic number, because the mean of its divisors is an integer number (94952312).

Almost surely, 2^2660380836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2660380836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3418283232).

2660380836 is an abundant number, since it is smaller than the sum of its proper divisors (4176185628).

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

2660380836 is a wasteful number, since it uses less digits than its factorization.

2660380836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26769 (or 26748 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 2660380836 is about 51578.8797474315. The cubic root of 2660380836 is about 1385.6321035674.

The spelling of 2660380836 in words is "two billion, six hundred sixty million, three hundred eighty thousand, eight hundred thirty-six".