2646990 has 24 divisors (see below), whose sum is σ = 6882408. Its totient is φ = 705840.

The previous prime is 2646989. The next prime is 2646991. The reversal of 2646990 is 996462.

2646990 is a `hidden beast` number, since 2 + 646 + 9 + 9 + 0 = 666.

2646990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2646989) and next prime (2646991).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14616 + ... + 14795.

It is an arithmetic number, because the mean of its divisors is an integer number (286767).

2^2646990 is an apocalyptic number.

2646990 is an abundant number, since it is smaller than the sum of its proper divisors (4235418).

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

2646990 is a wasteful number, since it uses less digits than its factorization.

2646990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29424 (or 29421 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2646990 is about 1626.9572827828. The cubic root of 2646990 is about 138.3303365426.

The spelling of 2646990 in words is "two million, six hundred forty-six thousand, nine hundred ninety".