2685036816 has 320 divisors, whose sum is σ = 9796515840. Its totient is φ = 683804160.

The previous prime is 2685036787. The next prime is 2685036829. The reversal of 2685036816 is 6186305862.

2685036816 is a `hidden beast` number, since 2 + 68 + 503 + 6 + 81 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1762231 + ... + 1763753.

It is an arithmetic number, because the mean of its divisors is an integer number (30614112).

Almost surely, 2^2685036816 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 2685036816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4898257920).

2685036816 is an abundant number, since it is smaller than the sum of its proper divisors (7111479024).

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

2685036816 is a wasteful number, since it uses less digits than its factorization.

2685036816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 2685036816 is about 51817.3408812147. The cubic root of 2685036816 is about 1389.8995521154.

The spelling of 2685036816 in words is "two billion, six hundred eighty-five million, thirty-six thousand, eight hundred sixteen".