2620774641 has 4 divisors (see below), whose sum is σ = 3494366192. Its totient is φ = 1747183092.

The previous prime is 2620774619. The next prime is 2620774691. The reversal of 2620774641 is 1464770262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2620774641 - 2²⁷ = 2486556913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620774641.

It is not an unprimeable number, because it can be changed into a prime (2620774691) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 436795771 + ... + 436795776.

It is an arithmetic number, because the mean of its divisors is an integer number (873591548).

Almost surely, 2^2620774641 is an apocalyptic number.

It is an amenable number.

2620774641 is a deficient number, since it is larger than the sum of its proper divisors (873591551).

2620774641 is an equidigital number, since it uses as much as digits as its factorization.

2620774641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873591550.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 2620774641 is about 51193.5019411644. The cubic root of 2620774641 is about 1378.7215354578.

The spelling of 2620774641 in words is "two billion, six hundred twenty million, seven hundred seventy-four thousand, six hundred forty-one".