617661359 has 16 divisors (see below), whose sum is σ = 714894336. Its totient is φ = 522708000.

The previous prime is 617661353. The next prime is 617661361. The reversal of 617661359 is 953166716.

617661359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 617661359 - 2²⁰ = 616612783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617661353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303704 + ... + 305730.

It is an arithmetic number, because the mean of its divisors is an integer number (44680896).

Almost surely, 2^617661359 is an apocalyptic number.

617661359 is a deficient number, since it is larger than the sum of its proper divisors (97232977).

617661359 is a wasteful number, since it uses less digits than its factorization.

617661359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566.

The product of its digits is 204120, while the sum is 44.

The square root of 617661359 is about 24852.7937866148. The cubic root of 617661359 is about 851.6284164910.

The spelling of 617661359 in words is "six hundred seventeen million, six hundred sixty-one thousand, three hundred fifty-nine".