618120720 has 200 divisors, whose sum is σ = 2453694144. Its totient is φ = 141274368.

The previous prime is 618120719. The next prime is 618120809. The reversal of 618120720 is 27021816.

618120720 is a `hidden beast` number, since 618 + 1 + 20 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable 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 39 ways as a sum of consecutive naturals, for example, 38547 + ... + 52173.

Almost surely, 2^618120720 is an apocalyptic number.

618120720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618120720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1226847072).

618120720 is an abundant number, since it is smaller than the sum of its proper divisors (1835573424).

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

618120720 is a wasteful number, since it uses less digits than its factorization.

618120720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13659 (or 13644 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 618120720 is about 24862.0337060346. The cubic root of 618120720 is about 851.8394857305.

The spelling of 618120720 in words is "six hundred eighteen million, one hundred twenty thousand, seven hundred twenty".