2606849406 has 80 divisors (see below), whose sum is σ = 6700155264. Its totient is φ = 742090896.

The previous prime is 2606849389. The next prime is 2606849447. The reversal of 2606849406 is 6049486062.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 316861 + ... + 324983.

Almost surely, 2^2606849406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2606849406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3350077632).

2606849406 is an abundant number, since it is smaller than the sum of its proper divisors (4093305858).

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

2606849406 is a wasteful number, since it uses less digits than its factorization.

2606849406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427 (or 8418 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 2606849406 is about 51057.3149117734. The cubic root of 2606849406 is about 1376.2752961071.

The spelling of 2606849406 in words is "two billion, six hundred six million, eight hundred forty-nine thousand, four hundred six".