2506646 has 4 divisors (see below), whose sum is σ = 3759972. Its totient is φ = 1253322.

The previous prime is 2506643. The next prime is 2506649. The reversal of 2506646 is 6466052.

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

It is an interprime number because it is at equal distance from previous prime (2506643) and next prime (2506649).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626660 + ... + 626663.

It is an arithmetic number, because the mean of its divisors is an integer number (939993).

2^2506646 is an apocalyptic number.

2506646 is a deficient number, since it is larger than the sum of its proper divisors (1253326).

2506646 is a wasteful number, since it uses less digits than its factorization.

2506646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253325.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2506646 is about 1583.2390849142. The cubic root of 2506646 is about 135.8410412110.

The spelling of 2506646 in words is "two million, five hundred six thousand, six hundred forty-six".