2620060405 has 4 divisors (see below), whose sum is σ = 3144072492. Its totient is φ = 2096048320.

The previous prime is 2620060397. The next prime is 2620060427. The reversal of 2620060405 is 5040600262.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1840924836 + 779135569 = 42906^2 + 27913^2 .

It is not a de Polignac number, because 2620060405 - 2³ = 2620060397 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 2620060405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262006036 + ... + 262006045.

It is an arithmetic number, because the mean of its divisors is an integer number (786018123).

Almost surely, 2^2620060405 is an apocalyptic number.

It is an amenable number.

2620060405 is a deficient number, since it is larger than the sum of its proper divisors (524012087).

2620060405 is an equidigital number, since it uses as much as digits as its factorization.

2620060405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524012086.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2620060405 is about 51186.5256195417. The cubic root of 2620060405 is about 1378.5962770693.

Adding to 2620060405 its reverse (5040600262), we get a palindrome (7660660667).

The spelling of 2620060405 in words is "two billion, six hundred twenty million, sixty thousand, four hundred five".