2620552605 has 64 divisors (see below), whose sum is σ = 4735328256. Its totient is φ = 1226016000.

The previous prime is 2620552591. The next prime is 2620552651. The reversal of 2620552605 is 5062550262.

It is not a de Polignac number, because 2620552605 - 2⁴ = 2620552589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2766742 + ... + 2767688.

It is an arithmetic number, because the mean of its divisors is an integer number (73989504).

Almost surely, 2^2620552605 is an apocalyptic number.

It is an amenable number.

2620552605 is a deficient number, since it is larger than the sum of its proper divisors (2114775651).

2620552605 is a wasteful number, since it uses less digits than its factorization.

2620552605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 2620552605 is about 51191.3332996905. Note that the first 3 decimals coincide. The cubic root of 2620552605 is about 1378.6825985654.

The spelling of 2620552605 in words is "two billion, six hundred twenty million, five hundred fifty-two thousand, six hundred five".