616954517 has 2 divisors, whose sum is σ = 616954518. Its totient is φ = 616954516.

The previous prime is 616954501. The next prime is 616954523. The reversal of 616954517 is 715459616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 594920881 + 22033636 = 24391^2 + 4694^2 .

It is a cyclic number.

It is not a de Polignac number, because 616954517 - 2⁴ = 616954501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616954537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308477258 + 308477259.

It is an arithmetic number, because the mean of its divisors is an integer number (308477259).

Almost surely, 2^616954517 is an apocalyptic number.

It is an amenable number.

616954517 is a deficient number, since it is larger than the sum of its proper divisors (1).

616954517 is an equidigital number, since it uses as much as digits as its factorization.

616954517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 616954517 is about 24838.5691415589. The cubic root of 616954517 is about 851.3034290753.

The spelling of 616954517 in words is "six hundred sixteen million, nine hundred fifty-four thousand, five hundred seventeen".