619998120 has 384 divisors, whose sum is σ = 2533939200. Its totient is φ = 128189952.

The previous prime is 619998107. The next prime is 619998149. The reversal of 619998120 is 21899916.

619998120 is a `hidden beast` number, since 619 + 9 + 9 + 8 + 1 + 20 = 666.

619998120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1100959 + ... + 1101521.

It is an arithmetic number, because the mean of its divisors is an integer number (6598800).

Almost surely, 2^619998120 is an apocalyptic number.

619998120 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 619998120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266969600).

619998120 is an abundant number, since it is smaller than the sum of its proper divisors (1913941080).

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

619998120 is a wasteful number, since it uses less digits than its factorization.

619998120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 619998120 is about 24899.7614446404. The cubic root of 619998120 is about 852.7010364566.

The spelling of 619998120 in words is "six hundred nineteen million, nine hundred ninety-eight thousand, one hundred twenty".