618488 has 32 divisors (see below), whose sum is σ = 1318800. Its totient is φ = 269568.

The previous prime is 618463. The next prime is 618509. The reversal of 618488 is 884816.

It is a super-2 number, since 2×618488² = 765054812288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

618488 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1820 + ... + 2132.

2⁶¹⁸⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659400).

618488 is an abundant number, since it is smaller than the sum of its proper divisors (700312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618488 is a wasteful number, since it uses less digits than its factorization.

618488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 347 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 618488 is about 786.4400803621. The cubic root of 618488 is about 85.2008169964.

The spelling of 618488 in words is "six hundred eighteen thousand, four hundred eighty-eight".