618447 has 8 divisors (see below), whose sum is σ = 860544. Its totient is φ = 394328.

The previous prime is 618439. The next prime is 618463. The reversal of 618447 is 744816.

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 618447 - 2³ = 618439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618407) 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, 4413 + ... + 4550.

It is an arithmetic number, because the mean of its divisors is an integer number (107568).

2⁶¹⁸⁴⁴⁷ is an apocalyptic number.

618447 is a deficient number, since it is larger than the sum of its proper divisors (242097).

618447 is a wasteful number, since it uses less digits than its factorization.

618447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8989.

The product of its digits is 5376, while the sum is 30.

The square root of 618447 is about 786.4140131000. The cubic root of 618447 is about 85.1989342810.

The spelling of 618447 in words is "six hundred eighteen thousand, four hundred forty-seven".