616541593 has 2 divisors, whose sum is σ = 616541594. Its totient is φ = 616541592.

The previous prime is 616541581. The next prime is 616541663. The reversal of 616541593 is 395145616.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 601819024 + 14722569 = 24532^2 + 3837^2 .

It is a cyclic number.

It is not a de Polignac number, because 616541593 - 2²⁵ = 582987161 is a prime.

It is not a weakly prime, because it can be changed into another prime (616541543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308270796 + 308270797.

It is an arithmetic number, because the mean of its divisors is an integer number (308270797).

Almost surely, 2^616541593 is an apocalyptic number.

It is an amenable number.

616541593 is a deficient number, since it is larger than the sum of its proper divisors (1).

616541593 is an equidigital number, since it uses as much as digits as its factorization.

616541593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 616541593 is about 24830.2555967513. The cubic root of 616541593 is about 851.1134625755.

The spelling of 616541593 in words is "six hundred sixteen million, five hundred forty-one thousand, five hundred ninety-three".