163976 has 16 divisors (see below), whose sum is σ = 312000. Its totient is φ = 80784.

The previous prime is 163973. The next prime is 163979. The reversal of 163976 is 679361.

It is an interprime number because it is at equal distance from previous prime (163973) and next prime (163979).

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (163973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725 + ... + 923.

It is an arithmetic number, because the mean of its divisors is an integer number (19500).

2¹⁶³⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

163976 is a deficient number, since it is larger than the sum of its proper divisors (148024).

163976 is a wasteful number, since it uses less digits than its factorization.

163976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 304 counting only the distinct ones).

The product of its digits is 6804, while the sum is 32.

The square root of 163976 is about 404.9395016543. The cubic root of 163976 is about 54.7343665184.

The spelling of 163976 in words is "one hundred sixty-three thousand, nine hundred seventy-six".