2620728743 has 4 divisors (see below), whose sum is σ = 2621961840. Its totient is φ = 2619495648.

The previous prime is 2620728731. The next prime is 2620728757. The reversal of 2620728743 is 3478270262.

2620728743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2620728743 - 2¹⁰ = 2620727719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620728743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620728043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613355 + ... + 617612.

It is an arithmetic number, because the mean of its divisors is an integer number (655490460).

Almost surely, 2^2620728743 is an apocalyptic number.

2620728743 is a deficient number, since it is larger than the sum of its proper divisors (1233097).

2620728743 is a wasteful number, since it uses less digits than its factorization.

2620728743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233096.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 2620728743 is about 51193.0536596519. The cubic root of 2620728743 is about 1378.7134868285.

The spelling of 2620728743 in words is "two billion, six hundred twenty million, seven hundred twenty-eight thousand, seven hundred forty-three".