616005065 has 16 divisors (see below), whose sum is σ = 798965328. Its totient is φ = 453240576.

The previous prime is 616005059. The next prime is 616005073. The reversal of 616005065 is 560500616.

It can be written as a sum of positive squares in 8 ways, for example, as 32444416 + 583560649 = 5696^2 + 24157^2 .

It is a cyclic number.

It is not a de Polignac number, because 616005065 - 2¹⁸ = 615742921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 899 + ... + 35111.

It is an arithmetic number, because the mean of its divisors is an integer number (49935333).

Almost surely, 2^616005065 is an apocalyptic number.

616005065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

616005065 is a deficient number, since it is larger than the sum of its proper divisors (182960263).

616005065 is a wasteful number, since it uses less digits than its factorization.

616005065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34508.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 616005065 is about 24819.4493291048. The cubic root of 616005065 is about 850.8665050659.

The spelling of 616005065 in words is "six hundred sixteen million, five thousand, sixty-five".