617580989 has 8 divisors (see below), whose sum is σ = 620454912. Its totient is φ = 614714400.

The previous prime is 617580983. The next prime is 617581021. The reversal of 617580989 is 989085716.

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 617580989 - 2⁴ = 617580973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 617580989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617580983) by changing a digit.

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, 228842 + ... + 231524.

It is an arithmetic number, because the mean of its divisors is an integer number (77556864).

Almost surely, 2^617580989 is an apocalyptic number.

It is an amenable number.

617580989 is a deficient number, since it is larger than the sum of its proper divisors (2873923).

617580989 is a wasteful number, since it uses less digits than its factorization.

617580989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 617580989 is about 24851.1768131813. The cubic root of 617580989 is about 851.5914769697.

The spelling of 617580989 in words is "six hundred seventeen million, five hundred eighty thousand, nine hundred eighty-nine".