616166539 has 2 divisors, whose sum is σ = 616166540. Its totient is φ = 616166538.

The previous prime is 616166489. The next prime is 616166543. The reversal of 616166539 is 935661616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616166539 - 2¹¹ = 616164491 is a prime.

It is a super-2 number, since 2×616166539² = 759322407566477042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 616166495 and 616166504.

It is not a weakly prime, because it can be changed into another prime (616166839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308083269 + 308083270.

It is an arithmetic number, because the mean of its divisors is an integer number (308083270).

Almost surely, 2^616166539 is an apocalyptic number.

616166539 is a deficient number, since it is larger than the sum of its proper divisors (1).

616166539 is an equidigital number, since it uses as much as digits as its factorization.

616166539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 616166539 is about 24822.7020890152. The cubic root of 616166539 is about 850.9408447224.

The spelling of 616166539 in words is "six hundred sixteen million, one hundred sixty-six thousand, five hundred thirty-nine".