163686968 has 8 divisors (see below), whose sum is σ = 306913080. Its totient is φ = 81843480.

The previous prime is 163686953. The next prime is 163686977. The reversal of 163686968 is 869686361.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10230428 + ... + 10230443.

It is an arithmetic number, because the mean of its divisors is an integer number (38364135).

Almost surely, 2^163686968 is an apocalyptic number.

It is an amenable number.

163686968 is a deficient number, since it is larger than the sum of its proper divisors (143226112).

163686968 is a wasteful number, since it uses less digits than its factorization.

163686968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460877 (or 20460873 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 163686968 is about 12794.0207909789. The cubic root of 163686968 is about 547.0218846069.

The spelling of 163686968 in words is "one hundred sixty-three million, six hundred eighty-six thousand, nine hundred sixty-eight".