516618887 has 2 divisors, whose sum is σ = 516618888. Its totient is φ = 516618886.

The previous prime is 516618871. The next prime is 516618913. The reversal of 516618887 is 788816615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516618887 - 2⁴ = 516618871 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 (516618187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258309443 + 258309444.

It is an arithmetic number, because the mean of its divisors is an integer number (258309444).

Almost surely, 2^516618887 is an apocalyptic number.

516618887 is a deficient number, since it is larger than the sum of its proper divisors (1).

516618887 is an equidigital number, since it uses as much as digits as its factorization.

516618887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 50.

The square root of 516618887 is about 22729.2517914691. The cubic root of 516618887 is about 802.3984722896.

The spelling of 516618887 in words is "five hundred sixteen million, six hundred eighteen thousand, eight hundred eighty-seven".