2664680 has 16 divisors (see below), whose sum is σ = 5995620. Its totient is φ = 1065856.

The previous prime is 2664661. The next prime is 2664689. The reversal of 2664680 is 864662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2149156 + 515524 = 1466^2 + 718^2 .

It is not an unprimeable number, because it can be changed into a prime (2664689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33269 + ... + 33348.

2^2664680 is an apocalyptic number.

2664680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2664680 is an abundant number, since it is smaller than the sum of its proper divisors (3330940).

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

2664680 is a wasteful number, since it uses less digits than its factorization.

2664680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66628 (or 66624 counting only the distinct ones).

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

The square root of 2664680 is about 1632.3847585664. The cubic root of 2664680 is about 138.6378093715.

The spelling of 2664680 in words is "two million, six hundred sixty-four thousand, six hundred eighty".