619564968 has 96 divisors (see below), whose sum is σ = 1836151200. Its totient is φ = 187171200.

The previous prime is 619564937. The next prime is 619565029. The reversal of 619564968 is 869465916.

It is a happy number.

619564968 is a `hidden beast` number, since 6 + 19 + 564 + 9 + 68 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307083 + ... + 309093.

It is an arithmetic number, because the mean of its divisors is an integer number (19126575).

Almost surely, 2^619564968 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 619564968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918075600).

619564968 is an abundant number, since it is smaller than the sum of its proper divisors (1216586232).

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

619564968 is a wasteful number, since it uses less digits than its factorization.

619564968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2416 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 619564968 is about 24891.0620102879. The cubic root of 619564968 is about 852.5024147757.

The spelling of 619564968 in words is "six hundred nineteen million, five hundred sixty-four thousand, nine hundred sixty-eight".