2628306605 has 8 divisors (see below), whose sum is σ = 3154707864. Its totient is φ = 2102152000.

The previous prime is 2628306559. The next prime is 2628306677. The reversal of 2628306605 is 5066038262.

2628306605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 480354889 + 2147951716 = 21917^2 + 46346^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2628306605 - 2²² = 2624112301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37346 + ... + 81555.

It is an arithmetic number, because the mean of its divisors is an integer number (394338483).

Almost surely, 2^2628306605 is an apocalyptic number.

It is an amenable number.

2628306605 is a deficient number, since it is larger than the sum of its proper divisors (526401259).

2628306605 is a wasteful number, since it uses less digits than its factorization.

2628306605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123327.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 2628306605 is about 51267.0128347654. The cubic root of 2628306605 is about 1380.0410624553.

The spelling of 2628306605 in words is "two billion, six hundred twenty-eight million, three hundred six thousand, six hundred five".