163406671 has 2 divisors, whose sum is σ = 163406672. Its totient is φ = 163406670.

The previous prime is 163406657. The next prime is 163406687. The reversal of 163406671 is 176604361.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163406671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163403671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81703335 + 81703336.

It is an arithmetic number, because the mean of its divisors is an integer number (81703336).

Almost surely, 2^163406671 is an apocalyptic number.

163406671 is a deficient number, since it is larger than the sum of its proper divisors (1).

163406671 is an equidigital number, since it uses as much as digits as its factorization.

163406671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 163406671 is about 12783.0618789084. The cubic root of 163406671 is about 546.7094667478.

The spelling of 163406671 in words is "one hundred sixty-three million, four hundred six thousand, six hundred seventy-one".