618673 has 6 divisors (see below), whose sum is σ = 680162. Its totient is φ = 562320.

The previous prime is 618671. The next prime is 618679. The reversal of 618673 is 376816.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 278784 = 583^2 + 528^2 .

It is not a de Polignac number, because 618673 - 2¹ = 618671 is a prime.

It is a Duffinian number.

618673 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (618671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2436 + ... + 2677.

2⁶¹⁸⁶⁷³ is an apocalyptic number.

It is an amenable number.

618673 is a deficient number, since it is larger than the sum of its proper divisors (61489).

618673 is a wasteful number, since it uses less digits than its factorization.

618673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5135 (or 5124 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 618673 is about 786.5576901919. The cubic root of 618673 is about 85.2093111412.

The spelling of 618673 in words is "six hundred eighteen thousand, six hundred seventy-three".