2605106620 has 24 divisors (see below), whose sum is σ = 5479851888. Its totient is φ = 1040304000.

The previous prime is 2605106597. The next prime is 2605106659. The reversal of 2605106620 is 266015062.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96346 + ... + 120385.

It is an arithmetic number, because the mean of its divisors is an integer number (228327162).

Almost surely, 2^2605106620 is an apocalyptic number.

2605106620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605106620 is an abundant number, since it is smaller than the sum of its proper divisors (2874745268).

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

2605106620 is a wasteful number, since it uses less digits than its factorization.

2605106620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217341 (or 217339 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2605106620 is about 51040.2451012924. The cubic root of 2605106620 is about 1375.9685288626.

The spelling of 2605106620 in words is "two billion, six hundred five million, one hundred six thousand, six hundred twenty".