616444616 has 32 divisors (see below), whose sum is σ = 1237599000. Its totient is φ = 286826496.

The previous prime is 616444573. The next prime is 616444627.

616444616 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 368256100 + 248188516 = 19190^2 + 15754^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 616444616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13361 + ... + 37568.

Almost surely, 2^616444616 is an apocalyptic number.

It is an amenable number.

616444616 is an abundant number, since it is smaller than the sum of its proper divisors (621154384).

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

616444616 is a wasteful number, since it uses less digits than its factorization.

616444616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51041 (or 51037 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 616444616 is about 24828.3027208869. The cubic root of 616444616 is about 851.0688358170.

The spelling of 616444616 in words is "six hundred sixteen million, four hundred forty-four thousand, six hundred sixteen".