2601806 has 16 divisors (see below), whose sum is σ = 4109184. Its totient is φ = 1233144.

The previous prime is 2601787. The next prime is 2601817. The reversal of 2601806 is 6081062.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7325 + ... + 7671.

It is an arithmetic number, because the mean of its divisors is an integer number (256824).

2^2601806 is an apocalyptic number.

2601806 is a deficient number, since it is larger than the sum of its proper divisors (1507378).

2601806 is a wasteful number, since it uses less digits than its factorization.

2601806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2601806 is about 1613.0114692711. The cubic root of 2601806 is about 137.5387174715.

Adding to 2601806 its reverse (6081062), we get a palindrome (8682868).

The spelling of 2601806 in words is "two million, six hundred one thousand, eight hundred six".