616844249 has 8 divisors (see below), whose sum is σ = 705976128. Its totient is φ = 527965200.

The previous prime is 616844213. The next prime is 616844273. The reversal of 616844249 is 942448616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-616844249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616844209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57947 + ... + 67760.

It is an arithmetic number, because the mean of its divisors is an integer number (88247016).

Almost surely, 2^616844249 is an apocalyptic number.

It is an amenable number.

616844249 is a deficient number, since it is larger than the sum of its proper divisors (89131879).

616844249 is a wasteful number, since it uses less digits than its factorization.

616844249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126415.

The product of its digits is 331776, while the sum is 44.

The square root of 616844249 is about 24836.3493492904. The cubic root of 616844249 is about 851.2527083620.

The spelling of 616844249 in words is "six hundred sixteen million, eight hundred forty-four thousand, two hundred forty-nine".