616445559 has 12 divisors (see below), whose sum is σ = 923400296. Its totient is φ = 410963544.

The previous prime is 616445503. The next prime is 616445579. The reversal of 616445559 is 955544616.

It is not a de Polignac number, because 616445559 - 2⁸ = 616445303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616445579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1268164 + ... + 1268649.

Almost surely, 2^616445559 is an apocalyptic number.

616445559 is a deficient number, since it is larger than the sum of its proper divisors (306954737).

616445559 is an equidigital number, since it uses as much as digits as its factorization.

616445559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536828 (or 2536816 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 616445559 is about 24828.3217113038. The cubic root of 616445559 is about 851.0692697882.

The spelling of 616445559 in words is "six hundred sixteen million, four hundred forty-five thousand, five hundred fifty-nine".