618448 has 10 divisors (see below), whose sum is σ = 1198274. Its totient is φ = 309216.

The previous prime is 618439. The next prime is 618463. The reversal of 618448 is 844816.

It can be written as a sum of positive squares in only one way, i.e., 399424 + 219024 = 632^2 + 468^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19311 + ... + 19342.

2⁶¹⁸⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

618448 is a deficient number, since it is larger than the sum of its proper divisors (579826).

618448 is a wasteful number, since it uses less digits than its factorization.

618448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38661 (or 38655 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 618448 is about 786.4146488971. The cubic root of 618448 is about 85.1989802019.

The spelling of 618448 in words is "six hundred eighteen thousand, four hundred forty-eight".