165988847 has 8 divisors (see below), whose sum is σ = 167479152. Its totient is φ = 164505600.

The previous prime is 165988817. The next prime is 165988853. The reversal of 165988847 is 748889561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165988847 - 2⁸ = 165988591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165988792 and 165988801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165988817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52697 + ... + 55757.

It is an arithmetic number, because the mean of its divisors is an integer number (20934894).

Almost surely, 2^165988847 is an apocalyptic number.

165988847 is a deficient number, since it is larger than the sum of its proper divisors (1490305).

165988847 is a wasteful number, since it uses less digits than its factorization.

165988847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529.

The product of its digits is 3870720, while the sum is 56.

The square root of 165988847 is about 12883.6658991143. The cubic root of 165988847 is about 549.5741574249.

The spelling of 165988847 in words is "one hundred sixty-five million, nine hundred eighty-eight thousand, eight hundred forty-seven".