2660684 has 24 divisors (see below), whose sum is σ = 5280240. Its totient is φ = 1162944.

The previous prime is 2660659. The next prime is 2660719. The reversal of 2660684 is 4860662.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2660684.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359 + ... + 2334.

It is an arithmetic number, because the mean of its divisors is an integer number (220010).

2^2660684 is an apocalyptic number.

It is an amenable number.

2660684 is a deficient number, since it is larger than the sum of its proper divisors (2619556).

2660684 is a wasteful number, since it uses less digits than its factorization.

2660684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 2660684 is about 1631.1603232055. The cubic root of 2660684 is about 138.5684734856.

The spelling of 2660684 in words is "two million, six hundred sixty thousand, six hundred eighty-four".