2660985 has 32 divisors (see below), whose sum is σ = 4942080. Its totient is φ = 1355904.

The previous prime is 2660963. The next prime is 2660989. The reversal of 2660985 is 5890662.

2660985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2660985 - 2⁹ = 2660473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2677 + ... + 3533.

It is an arithmetic number, because the mean of its divisors is an integer number (154440).

2^2660985 is an apocalyptic number.

It is an amenable number.

2660985 is a deficient number, since it is larger than the sum of its proper divisors (2281095).

2660985 is a wasteful number, since it uses less digits than its factorization.

2660985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2660985 is about 1631.2525862048. The cubic root of 2660985 is about 138.5736986505.

The spelling of 2660985 in words is "two million, six hundred sixty thousand, nine hundred eighty-five".