616840033 has 2 divisors, whose sum is σ = 616840034. Its totient is φ = 616840032.

The previous prime is 616840009. The next prime is 616840099. The reversal of 616840033 is 330048616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612711009 + 4129024 = 24753^2 + 2032^2 .

It is a cyclic number.

It is not a de Polignac number, because 616840033 - 2⁵ = 616840001 is a prime.

It is a super-2 number, since 2×616840033² = 760983252622882178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 616839977 and 616840004.

It is not a weakly prime, because it can be changed into another prime (616843033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308420016 + 308420017.

It is an arithmetic number, because the mean of its divisors is an integer number (308420017).

Almost surely, 2^616840033 is an apocalyptic number.

It is an amenable number.

616840033 is a deficient number, since it is larger than the sum of its proper divisors (1).

616840033 is an equidigital number, since it uses as much as digits as its factorization.

616840033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 616840033 is about 24836.2644735475. The cubic root of 616840033 is about 851.2507689802.

Adding to 616840033 its reverse (330048616), we get a palindrome (946888649).

The spelling of 616840033 in words is "six hundred sixteen million, eight hundred forty thousand, thirty-three".