617120173 has 4 divisors (see below), whose sum is σ = 625573948. Its totient is φ = 608666400.

The previous prime is 617120159. The next prime is 617120191. The reversal of 617120173 is 371021716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 320660649 + 296459524 = 17907^2 + 17218^2 .

It is a cyclic number.

It is not a de Polignac number, because 617120173 - 2⁹ = 617119661 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 (617120123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226778 + ... + 4226923.

It is an arithmetic number, because the mean of its divisors is an integer number (156393487).

Almost surely, 2^617120173 is an apocalyptic number.

It is an amenable number.

617120173 is a deficient number, since it is larger than the sum of its proper divisors (8453775).

617120173 is an equidigital number, since it uses as much as digits as its factorization.

617120173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453774.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 617120173 is about 24841.9035703788. The cubic root of 617120173 is about 851.3796156212.

Adding to 617120173 its reverse (371021716), we get a palindrome (988141889).

The spelling of 617120173 in words is "six hundred seventeen million, one hundred twenty thousand, one hundred seventy-three".