2660804 has 6 divisors (see below), whose sum is σ = 4656414. Its totient is φ = 1330400.

The previous prime is 2660803. The next prime is 2660809. The reversal of 2660804 is 4080662.

It can be written as a sum of positive squares in only one way, i.e., 1562500 + 1098304 = 1250^2 + 1048^2 .

It is not an unprimeable number, because it can be changed into a prime (2660803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332597 + ... + 332604.

It is an arithmetic number, because the mean of its divisors is an integer number (776069).

2^2660804 is an apocalyptic number.

It is an amenable number.

2660804 is a deficient number, since it is larger than the sum of its proper divisors (1995610).

2660804 is a wasteful number, since it uses less digits than its factorization.

2660804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665205 (or 665203 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2660804 is about 1631.1971064222. The cubic root of 2660804 is about 138.5705566551.

The spelling of 2660804 in words is "two million, six hundred sixty thousand, eight hundred four".