2646020 has 24 divisors (see below), whose sum is σ = 5984664. Its totient is φ = 976896.

The previous prime is 2646019. The next prime is 2646023. The reversal of 2646020 is 206462.

It can be written as a sum of positive squares in 4 ways, for example, as 111556 + 2534464 = 334^2 + 1592^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2645983 and 2646001.

It is not an unprimeable number, because it can be changed into a prime (2646023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4829 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (249361).

2^2646020 is an apocalyptic number.

2646020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646020 is an abundant number, since it is smaller than the sum of its proper divisors (3338644).

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

2646020 is a wasteful number, since it uses less digits than its factorization.

2646020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10199 (or 10197 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2646020 is about 1626.6591529881. The cubic root of 2646020 is about 138.3134372443.

The spelling of 2646020 in words is "two million, six hundred forty-six thousand, twenty".