2666020 has 48 divisors (see below), whose sum is σ = 6491520. Its totient is φ = 900864.

The previous prime is 2665973. The next prime is 2666021. The reversal of 2666020 is 206662.

It is a junction number, because it is equal to n+sod(n) for n = 2665982 and 2666000.

It is not an unprimeable number, because it can be changed into a prime (2666021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19111 + ... + 19249.

It is an arithmetic number, because the mean of its divisors is an integer number (135240).

2^2666020 is an apocalyptic number.

2666020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3245760).

2666020 is an abundant number, since it is smaller than the sum of its proper divisors (3825500).

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

2666020 is a wasteful number, since it uses less digits than its factorization.

2666020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2666020 is about 1632.7951494293. The cubic root of 2666020 is about 138.6610446233.

The spelling of 2666020 in words is "two million, six hundred sixty-six thousand, twenty".