618666048 has 672 divisors, whose sum is σ = 2529596160. Its totient is φ = 139345920.

The previous prime is 618666043. The next prime is 618666053. The reversal of 618666048 is 840666816.

It is an interprime number because it is at equal distance from previous prime (618666043) and next prime (618666053).

It is a tau number, because it is divible by the number of its divisors (672).

It is a junction number, because it is equal to n+sod(n) for n = 618665994 and 618666012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618666043) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16720686 + ... + 16720722.

It is an arithmetic number, because the mean of its divisors is an integer number (3764280).

Almost surely, 2^618666048 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 618666048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264798080).

618666048 is an abundant number, since it is smaller than the sum of its proper divisors (1910930112).

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

618666048 is a wasteful number, since it uses less digits than its factorization.

618666048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 618666048 is about 24872.9983717283. The cubic root of 618666048 is about 852.0899197564.

It can be divided in two parts, 618 and 666048, that added together give a palindrome (666666).

The spelling of 618666048 in words is "six hundred eighteen million, six hundred sixty-six thousand, forty-eight".