618867 has 8 divisors (see below), whose sum is σ = 916880. Its totient is φ = 412560.

The previous prime is 618859. The next prime is 618869. The reversal of 618867 is 768816.

It is not a de Polignac number, because 618867 - 2³ = 618859 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 618867.

It is not an unprimeable number, because it can be changed into a prime (618869) 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, 11434 + ... + 11487.

It is an arithmetic number, because the mean of its divisors is an integer number (114610).

2⁶¹⁸⁸⁶⁷ is an apocalyptic number.

618867 is a deficient number, since it is larger than the sum of its proper divisors (298013).

618867 is a wasteful number, since it uses less digits than its factorization.

618867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22930 (or 22924 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 618867 is about 786.6810026942. The cubic root of 618867 is about 85.2182166959.

It can be divided in two parts, 618 and 867, that added together give a triangular number (1485 = T₅₄).

The spelling of 618867 in words is "six hundred eighteen thousand, eight hundred sixty-seven".