2685569964 has 96 divisors (see below), whose sum is σ = 8023819776. Its totient is φ = 678689280.

The previous prime is 2685569963. The next prime is 2685569977. The reversal of 2685569964 is 4699655862.

It is a happy number.

It is a super-3 number, since 3×2685569964³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2685569898 and 2685569907.

It is not an unprimeable number, because it can be changed into a prime (2685569963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5089 + ... + 73464.

It is an arithmetic number, because the mean of its divisors is an integer number (83581456).

Almost surely, 2^2685569964 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 2685569964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4011909888).

2685569964 is an abundant number, since it is smaller than the sum of its proper divisors (5338249812).

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

2685569964 is a wasteful number, since it uses less digits than its factorization.

2685569964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78615 (or 78613 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 60.

The square root of 2685569964 is about 51822.4851198782. The cubic root of 2685569964 is about 1389.9915400689.

The spelling of 2685569964 in words is "two billion, six hundred eighty-five million, five hundred sixty-nine thousand, nine hundred sixty-four".