16995887 has 2 divisors, whose sum is σ = 16995888. Its totient is φ = 16995886.

The previous prime is 16995877. The next prime is 16995893. The reversal of 16995887 is 78859961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16995887 - 2¹⁰ = 16994863 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 (16995817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8497943 + 8497944.

It is an arithmetic number, because the mean of its divisors is an integer number (8497944).

Almost surely, 2^16995887 is an apocalyptic number.

16995887 is a deficient number, since it is larger than the sum of its proper divisors (1).

16995887 is an equidigital number, since it uses as much as digits as its factorization.

16995887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The square root of 16995887 is about 4122.6068209326. The cubic root of 16995887 is about 257.1074207635.

The spelling of 16995887 in words is "sixteen million, nine hundred ninety-five thousand, eight hundred eighty-seven".