618213 has 8 divisors (see below), whose sum is σ = 828576. Its totient is φ = 410000.

The previous prime is 618199. The next prime is 618227. The reversal of 618213 is 312816.

It is an interprime number because it is at equal distance from previous prime (618199) and next prime (618227).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 618213 - 2¹⁰ = 617189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 618213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (103572).

2⁶¹⁸²¹³ is an apocalyptic number.

It is an amenable number.

618213 is a deficient number, since it is larger than the sum of its proper divisors (210363).

618213 is a wasteful number, since it uses less digits than its factorization.

618213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its digits is 288, while the sum is 21.

The square root of 618213 is about 786.2652224282. The cubic root of 618213 is about 85.1881874342.

It can be divided in two parts, 6 and 18213, that multiplied together give a triangular number (109278 = T₄₆₇).

The spelling of 618213 in words is "six hundred eighteen thousand, two hundred thirteen".