617568745 has 8 divisors (see below), whose sum is σ = 773303616. Its totient is φ = 472574256.

The previous prime is 617568713. The next prime is 617568779. The reversal of 617568745 is 547865716.

It is a happy number.

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 617568745 - 2⁵ = 617568713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2684967 + ... + 2685196.

It is an arithmetic number, because the mean of its divisors is an integer number (96662952).

Almost surely, 2^617568745 is an apocalyptic number.

It is an amenable number.

617568745 is a deficient number, since it is larger than the sum of its proper divisors (155734871).

617568745 is a wasteful number, since it uses less digits than its factorization.

617568745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370191.

The product of its digits is 1411200, while the sum is 49.

The square root of 617568745 is about 24850.9304654775. The cubic root of 617568745 is about 851.5858491221.

The spelling of 617568745 in words is "six hundred seventeen million, five hundred sixty-eight thousand, seven hundred forty-five".