616505061 has 16 divisors (see below), whose sum is σ = 848586816. Its totient is φ = 397883136.

The previous prime is 616505011. The next prime is 616505083. The reversal of 616505061 is 160505616.

It is not a de Polignac number, because 616505061 - 2²² = 612310757 is a prime.

It is a super-3 number, since 3×616505061³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616505011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6570 + ... + 35723.

It is an arithmetic number, because the mean of its divisors is an integer number (53036676).

Almost surely, 2^616505061 is an apocalyptic number.

It is an amenable number.

616505061 is a deficient number, since it is larger than the sum of its proper divisors (232081755).

616505061 is a wasteful number, since it uses less digits than its factorization.

616505061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42452.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 616505061 is about 24829.5199510583. The cubic root of 616505061 is about 851.0966518734.

The spelling of 616505061 in words is "six hundred sixteen million, five hundred five thousand, sixty-one".