645330711 has 8 divisors (see below), whose sum is σ = 897851520. Its totient is φ = 411515192.

The previous prime is 645330709. The next prime is 645330739. The reversal of 645330711 is 117033546.

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 645330711 - 2¹ = 645330709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645330701) 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, 4676241 + ... + 4676378.

It is an arithmetic number, because the mean of its divisors is an integer number (112231440).

Almost surely, 2^645330711 is an apocalyptic number.

645330711 is a deficient number, since it is larger than the sum of its proper divisors (252520809).

645330711 is a wasteful number, since it uses less digits than its factorization.

645330711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9352645.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 645330711 is about 25403.3602304892. The cubic root of 645330711 is about 864.1599029426.

The spelling of 645330711 in words is "six hundred forty-five million, three hundred thirty thousand, seven hundred eleven".