616516507 has 2 divisors, whose sum is σ = 616516508. Its totient is φ = 616516506.

The previous prime is 616516489. The next prime is 616516573. The reversal of 616516507 is 705615616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 616516507 - 2¹⁵ = 616483739 is a prime.

It is not a weakly prime, because it can be changed into another prime (616519507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308258253 + 308258254.

It is an arithmetic number, because the mean of its divisors is an integer number (308258254).

Almost surely, 2^616516507 is an apocalyptic number.

616516507 is a deficient number, since it is larger than the sum of its proper divisors (1).

616516507 is an equidigital number, since it uses as much as digits as its factorization.

616516507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 616516507 is about 24829.7504417584. The cubic root of 616516507 is about 851.1019189791.

The spelling of 616516507 in words is "six hundred sixteen million, five hundred sixteen thousand, five hundred seven".