2666420 has 12 divisors (see below), whose sum is σ = 5599524. Its totient is φ = 1066560.

The previous prime is 2666393. The next prime is 2666423. The reversal of 2666420 is 246662.

It can be written as a sum of positive squares in 2 ways, for example, as 1737124 + 929296 = 1318^2 + 964^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2666420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666423) 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, 66641 + ... + 66680.

It is an arithmetic number, because the mean of its divisors is an integer number (466627).

2^2666420 is an apocalyptic number.

2666420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666420 is an abundant number, since it is smaller than the sum of its proper divisors (2933104).

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

2666420 is a wasteful number, since it uses less digits than its factorization.

2666420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133330 (or 133328 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2666420 is about 1632.9176341751. The cubic root of 2666420 is about 138.6679790104.

The spelling of 2666420 in words is "two million, six hundred sixty-six thousand, four hundred twenty".