2685668 has 6 divisors (see below), whose sum is σ = 4699926. Its totient is φ = 1342832.

The previous prime is 2685667. The next prime is 2685673. The reversal of 2685668 is 8665862.

It can be written as a sum of positive squares in only one way, i.e., 1721344 + 964324 = 1312^2 + 982^2 .

It is not an unprimeable number, because it can be changed into a prime (2685667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335705 + ... + 335712.

It is an arithmetic number, because the mean of its divisors is an integer number (783321).

2^2685668 is an apocalyptic number.

It is an amenable number.

2685668 is a deficient number, since it is larger than the sum of its proper divisors (2014258).

2685668 is a wasteful number, since it uses less digits than its factorization.

2685668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671421 (or 671419 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 2685668 is about 1638.8007810591. The cubic root of 2685668 is about 139.0008453617. Note that the first 3 decimals are identical.

The spelling of 2685668 in words is "two million, six hundred eighty-five thousand, six hundred sixty-eight".