2563606 has 4 divisors (see below), whose sum is σ = 3845412. Its totient is φ = 1281802.

The previous prime is 2563601. The next prime is 2563633. The reversal of 2563606 is 6063652.

2563606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563601) 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 as a sum of consecutive naturals, namely, 640900 + ... + 640903.

It is an arithmetic number, because the mean of its divisors is an integer number (961353).

2^2563606 is an apocalyptic number.

2563606 is a deficient number, since it is larger than the sum of its proper divisors (1281806).

2563606 is a wasteful number, since it uses less digits than its factorization.

2563606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281805.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 2563606 is about 1601.1264784520. The cubic root of 2563606 is about 136.8622765708.

The spelling of 2563606 in words is "two million, five hundred sixty-three thousand, six hundred six".