618387 has 16 divisors (see below), whose sum is σ = 1028352. Its totient is φ = 321120.

The previous prime is 618377. The next prime is 618407. The reversal of 618387 is 783816.

It is not a de Polignac number, because 618387 - 2⁶ = 618323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an alternating number because its digits alternate between even and odd.

618387 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 618387.

It is not an unprimeable number, because it can be changed into a prime (618337) 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, 1108 + ... + 1569.

It is an arithmetic number, because the mean of its divisors is an integer number (64272).

2⁶¹⁸³⁸⁷ is an apocalyptic number.

618387 is a deficient number, since it is larger than the sum of its proper divisors (409965).

618387 is a wasteful number, since it uses less digits than its factorization.

618387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698.

The product of its digits is 8064, while the sum is 33.

The square root of 618387 is about 786.3758643295. The cubic root of 618387 is about 85.1961789377.

It can be divided in two parts, 61 and 8387, that added together give a palindrome (8448).

The spelling of 618387 in words is "six hundred eighteen thousand, three hundred eighty-seven".