618449 has 8 divisors (see below), whose sum is σ = 673512. Its totient is φ = 564480.

The previous prime is 618439. The next prime is 618463. The reversal of 618449 is 944816.

It can be written as a sum of positive squares in 4 ways, for example, as 135424 + 483025 = 368^2 + 695^2 .

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 618449 - 2¹⁶ = 552913 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618439) 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, 1259 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (84189).

2⁶¹⁸⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

618449 is a deficient number, since it is larger than the sum of its proper divisors (55063).

618449 is a wasteful number, since it uses less digits than its factorization.

618449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its digits is 6912, while the sum is 32.

The square root of 618449 is about 786.4152846938. The cubic root of 618449 is about 85.1990261227.

The spelling of 618449 in words is "six hundred eighteen thousand, four hundred forty-nine".