163680727 has 24 divisors (see below), whose sum is σ = 198223200. Its totient is φ = 134600256.

The previous prime is 163680721. The next prime is 163680749. The reversal of 163680727 is 727086361.

163680727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-163680727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163680727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163680721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325158 + ... + 325660.

It is an arithmetic number, because the mean of its divisors is an integer number (8259300).

Almost surely, 2^163680727 is an apocalyptic number.

163680727 is a deficient number, since it is larger than the sum of its proper divisors (34542473).

163680727 is a wasteful number, since it uses less digits than its factorization.

163680727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 163680727 is about 12793.7768856581. The cubic root of 163680727 is about 547.0149322983.

The spelling of 163680727 in words is "one hundred sixty-three million, six hundred eighty thousand, seven hundred twenty-seven".