2649990 has 32 divisors (see below), whose sum is σ = 7269120. Its totient is φ = 605664.

The previous prime is 2649989. The next prime is 2650007. The reversal of 2649990 is 999462.

2649990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6100 + ... + 6519.

It is an arithmetic number, because the mean of its divisors is an integer number (227160).

2^2649990 is an apocalyptic number.

2649990 is an abundant number, since it is smaller than the sum of its proper divisors (4619130).

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

2649990 is a wasteful number, since it uses less digits than its factorization.

2649990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12636.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 2649990 is about 1627.8789881315. The cubic root of 2649990 is about 138.3825762979.

The spelling of 2649990 in words is "two million, six hundred forty-nine thousand, nine hundred ninety".