2646620 has 12 divisors (see below), whose sum is σ = 5557944. Its totient is φ = 1058640.

The previous prime is 2646619. The next prime is 2646641. The reversal of 2646620 is 266462.

It is a self number, because there is not a number n which added to its sum of digits gives 2646620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66146 + ... + 66185.

It is an arithmetic number, because the mean of its divisors is an integer number (463162).

2^2646620 is an apocalyptic number.

2646620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646620 is an abundant number, since it is smaller than the sum of its proper divisors (2911324).

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

2646620 is a wasteful number, since it uses less digits than its factorization.

2646620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132340 (or 132338 counting only the distinct ones).

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

The square root of 2646620 is about 1626.8435696157. The cubic root of 2646620 is about 138.3238909056.

The spelling of 2646620 in words is "two million, six hundred forty-six thousand, six hundred twenty".