2640606 has 8 divisors (see below), whose sum is σ = 5281224. Its totient is φ = 880200.

The previous prime is 2640581. The next prime is 2640643. The reversal of 2640606 is 6060462.

2640606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2640606 is an admirable number.

2640606 is a modest number, since divided by 606 gives 264 as remainder.

It is a zygodrome in base 5.

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 3 ways as a sum of consecutive naturals, for example, 220045 + ... + 220056.

It is an arithmetic number, because the mean of its divisors is an integer number (660153).

2^2640606 is an apocalyptic number.

2640606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2640606 is a wasteful number, since it uses less digits than its factorization.

2640606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440106.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2640606 is about 1624.9941538356. The cubic root of 2640606 is about 138.2190388328.

The spelling of 2640606 in words is "two million, six hundred forty thousand, six hundred six".