619688652 has 72 divisors (see below), whose sum is σ = 1615561920. Its totient is φ = 183345120.

The previous prime is 619688633. The next prime is 619688677. The reversal of 619688652 is 256886916.

It is a junction number, because it is equal to n+sod(n) for n = 619688595 and 619688604.

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, 242799 + ... + 245337.

It is an arithmetic number, because the mean of its divisors is an integer number (22438360).

Almost surely, 2^619688652 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 619688652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807780960).

619688652 is an abundant number, since it is smaller than the sum of its proper divisors (995873268).

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

619688652 is a wasteful number, since it uses less digits than its factorization.

619688652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643 (or 2598 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 619688652 is about 24893.5463925894. The cubic root of 619688652 is about 852.5591394662.

The spelling of 619688652 in words is "six hundred nineteen million, six hundred eighty-eight thousand, six hundred fifty-two".