616500889 has 2 divisors, whose sum is σ = 616500890. Its totient is φ = 616500888.

The previous prime is 616500811. The next prime is 616500943. The reversal of 616500889 is 988005616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479259664 + 137241225 = 21892^2 + 11715^2 .

It is a cyclic number.

It is not a de Polignac number, because 616500889 - 2¹⁹ = 615976601 is a prime.

It is a super-2 number, since 2×616500889² = 760146692275580642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (616500389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308250444 + 308250445.

It is an arithmetic number, because the mean of its divisors is an integer number (308250445).

Almost surely, 2^616500889 is an apocalyptic number.

It is an amenable number.

616500889 is a deficient number, since it is larger than the sum of its proper divisors (1).

616500889 is an equidigital number, since it uses as much as digits as its factorization.

616500889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 616500889 is about 24829.4359380152. The cubic root of 616500889 is about 851.0947320280.

The spelling of 616500889 in words is "six hundred sixteen million, five hundred thousand, eight hundred eighty-nine".