163345247 has 4 divisors (see below), whose sum is σ = 175910280. Its totient is φ = 150780216.

The previous prime is 163345243. The next prime is 163345249. The reversal of 163345247 is 742543361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163345247 - 2² = 163345243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163345243) 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, 6282497 + ... + 6282522.

It is an arithmetic number, because the mean of its divisors is an integer number (43977570).

Almost surely, 2^163345247 is an apocalyptic number.

163345247 is a deficient number, since it is larger than the sum of its proper divisors (12565033).

163345247 is a wasteful number, since it uses less digits than its factorization.

163345247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12565032.

The product of its digits is 60480, while the sum is 35.

The square root of 163345247 is about 12780.6590988102. The cubic root of 163345247 is about 546.6409560996.

The spelling of 163345247 in words is "one hundred sixty-three million, three hundred forty-five thousand, two hundred forty-seven".