617283889 has 8 divisors (see below), whose sum is σ = 655688520. Its totient is φ = 579111936.

The previous prime is 617283883. The next prime is 617283893. The reversal of 617283889 is 988382716.

It can be written as a sum of positive squares in 4 ways, for example, as 2640625 + 614643264 = 1625^2 + 24792^2 .

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

It is not a de Polignac number, because 617283889 - 2¹³ = 617275697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (617283883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52684 + ... + 63325.

It is an arithmetic number, because the mean of its divisors is an integer number (81961065).

Almost surely, 2^617283889 is an apocalyptic number.

It is an amenable number.

617283889 is a deficient number, since it is larger than the sum of its proper divisors (38404631).

617283889 is a wasteful number, since it uses less digits than its factorization.

617283889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116339.

The product of its digits is 1161216, while the sum is 52.

The square root of 617283889 is about 24845.1985099737. The cubic root of 617283889 is about 851.4548965510.

The spelling of 617283889 in words is "six hundred seventeen million, two hundred eighty-three thousand, eight hundred eighty-nine".