2820670345 has 12 divisors (see below), whose sum is σ = 3595624524. Its totient is φ = 2123797760.

The previous prime is 2820670337. The next prime is 2820670367. The reversal of 2820670345 is 5430760282.

It can be written as a sum of positive squares in 6 ways, for example, as 73547776 + 2747122569 = 8576^2 + 52413^2 .

It is not a de Polignac number, because 2820670345 - 2³ = 2820670337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 974566 + ... + 977455.

It is an arithmetic number, because the mean of its divisors is an integer number (299635377).

Almost surely, 2^2820670345 is an apocalyptic number.

It is an amenable number.

2820670345 is a deficient number, since it is larger than the sum of its proper divisors (774954179).

2820670345 is a wasteful number, since it uses less digits than its factorization.

2820670345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952060 (or 1952043 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 2820670345 is about 53109.9834776852. The cubic root of 2820670345 is about 1412.9195821410.

The spelling of 2820670345 in words is "two billion, eight hundred twenty million, six hundred seventy thousand, three hundred forty-five".