163612723 has 4 divisors (see below), whose sum is σ = 166385880. Its totient is φ = 160839568.

The previous prime is 163612651. The next prime is 163612733. The reversal of 163612723 is 327216361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327216361 = 967 ⋅338383.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163612723 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163612733) 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, 1386490 + ... + 1386607.

It is an arithmetic number, because the mean of its divisors is an integer number (41596470).

Almost surely, 2^163612723 is an apocalyptic number.

163612723 is a deficient number, since it is larger than the sum of its proper divisors (2773157).

163612723 is an equidigital number, since it uses as much as digits as its factorization.

163612723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773156.

The product of its digits is 9072, while the sum is 31.

The square root of 163612723 is about 12791.1189111821. The cubic root of 163612723 is about 546.9391661874.

The spelling of 163612723 in words is "one hundred sixty-three million, six hundred twelve thousand, seven hundred twenty-three".