159993677 has 2 divisors, whose sum is σ = 159993678. Its totient is φ = 159993676.

The previous prime is 159993641. The next prime is 159993679. The reversal of 159993677 is 776399951.

159993677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159921316 + 72361 = 12646^2 + 269^2 .

It is an emirp because it is prime and its reverse (776399951) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159993677 is a prime.

Together with 159993679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159993679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79996838 + 79996839.

It is an arithmetic number, because the mean of its divisors is an integer number (79996839).

Almost surely, 2^159993677 is an apocalyptic number.

It is an amenable number.

159993677 is a deficient number, since it is larger than the sum of its proper divisors (1).

159993677 is an equidigital number, since it uses as much as digits as its factorization.

159993677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3214890, while the sum is 56.

The square root of 159993677 is about 12648.8606996836. The cubic root of 159993677 is about 542.8763718654.

The spelling of 159993677 in words is "one hundred fifty-nine million, nine hundred ninety-three thousand, six hundred seventy-seven".