15798166 has 4 divisors (see below), whose sum is σ = 23697252. Its totient is φ = 7899082.

The previous prime is 15798163. The next prime is 15798169. The reversal of 15798166 is 66189751.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (15798163) and next prime (15798169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15798163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3949540 + ... + 3949543.

It is an arithmetic number, because the mean of its divisors is an integer number (5924313).

Almost surely, 2^15798166 is an apocalyptic number.

15798166 is a deficient number, since it is larger than the sum of its proper divisors (7899086).

15798166 is an equidigital number, since it uses as much as digits as its factorization.

15798166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7899085.

The product of its digits is 90720, while the sum is 43.

The square root of 15798166 is about 3974.6906797888. The cubic root of 15798166 is about 250.9201610593.

The spelling of 15798166 in words is "fifteen million, seven hundred ninety-eight thousand, one hundred sixty-six".