2620221045 has 64 divisors (see below), whose sum is σ = 4696581120. Its totient is φ = 1238934528.

The previous prime is 2620221031. The next prime is 2620221053. The reversal of 2620221045 is 5401220262.

It is a happy number.

It is not a de Polignac number, because 2620221045 - 2⁷ = 2620220917 is a prime.

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, 567687 + ... + 572283.

It is an arithmetic number, because the mean of its divisors is an integer number (73384080).

Almost surely, 2^2620221045 is an apocalyptic number.

It is an amenable number.

2620221045 is a deficient number, since it is larger than the sum of its proper divisors (2076360075).

2620221045 is a wasteful number, since it uses less digits than its factorization.

2620221045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2620221045 is about 51188.0947584494. The cubic root of 2620221045 is about 1378.6244511246.

The spelling of 2620221045 in words is "two billion, six hundred twenty million, two hundred twenty-one thousand, forty-five".