616045669 has 2 divisors, whose sum is σ = 616045670. Its totient is φ = 616045668.

The previous prime is 616045663. The next prime is 616045673. The reversal of 616045669 is 966540616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610584100 + 5461569 = 24710^2 + 2337^2 .

It is a cyclic number.

It is not a de Polignac number, because 616045669 - 2¹¹ = 616043621 is a prime.

It is a super-2 number, since 2×616045669² = 759024532587315122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616045663) 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, 308022834 + 308022835.

It is an arithmetic number, because the mean of its divisors is an integer number (308022835).

Almost surely, 2^616045669 is an apocalyptic number.

It is an amenable number.

616045669 is a deficient number, since it is larger than the sum of its proper divisors (1).

616045669 is an equidigital number, since it uses as much as digits as its factorization.

616045669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 616045669 is about 24820.2673031537. The cubic root of 616045669 is about 850.8851996224.

The spelling of 616045669 in words is "six hundred sixteen million, forty-five thousand, six hundred sixty-nine".