616276813 has 2 divisors, whose sum is σ = 616276814. Its totient is φ = 616276812.

The previous prime is 616276783. The next prime is 616276823. The reversal of 616276813 is 318672616.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 588208009 + 28068804 = 24253^2 + 5298^2 .

It is a cyclic number.

It is not a de Polignac number, because 616276813 - 2¹³ = 616268621 is a prime.

It is a super-2 number, since 2×616276813² = 759594220482873938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616276823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308138406 + 308138407.

It is an arithmetic number, because the mean of its divisors is an integer number (308138407).

Almost surely, 2^616276813 is an apocalyptic number.

It is an amenable number.

616276813 is a deficient number, since it is larger than the sum of its proper divisors (1).

616276813 is an equidigital number, since it uses as much as digits as its factorization.

616276813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 616276813 is about 24824.9232224392. The cubic root of 616276813 is about 850.9916053785.

The spelling of 616276813 in words is "six hundred sixteen million, two hundred seventy-six thousand, eight hundred thirteen".