2620320745 has 8 divisors (see below), whose sum is σ = 3593582784. Its totient is φ = 1796791344.

The previous prime is 2620320719. The next prime is 2620320749. The reversal of 2620320745 is 5470230262.

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

It is a cyclic number.

It is not a de Polignac number, because 2620320745 - 2⁷ = 2620320617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2620320749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37433119 + ... + 37433188.

It is an arithmetic number, because the mean of its divisors is an integer number (449197848).

Almost surely, 2^2620320745 is an apocalyptic number.

It is an amenable number.

2620320745 is a deficient number, since it is larger than the sum of its proper divisors (973262039).

2620320745 is an equidigital number, since it uses as much as digits as its factorization.

2620320745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74866319.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 2620320745 is about 51189.0686084441. The cubic root of 2620320745 is about 1378.6419365596.

The spelling of 2620320745 in words is "two billion, six hundred twenty million, three hundred twenty thousand, seven hundred forty-five".