619561216 has 36 divisors (see below), whose sum is σ = 1243275264. Its totient is φ = 308134400.

The previous prime is 619561211. The next prime is 619561223. The reversal of 619561216 is 612165916.

It is a super-2 number, since 2×619561216² = 767712200742797312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619561211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42561 + ... + 55231.

It is an arithmetic number, because the mean of its divisors is an integer number (34535424).

Almost surely, 2^619561216 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 619561216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621637632).

619561216 is an abundant number, since it is smaller than the sum of its proper divisors (623714048).

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

619561216 is a wasteful number, since it uses less digits than its factorization.

619561216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12878 (or 12864 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 619561216 is about 24890.9866417545. The cubic root of 619561216 is about 852.5006938932.

The spelling of 619561216 in words is "six hundred nineteen million, five hundred sixty-one thousand, two hundred sixteen".