161667226 has 8 divisors (see below), whose sum is σ = 277143840. Its totient is φ = 69285948.

The previous prime is 161667221. The next prime is 161667227. The reversal of 161667226 is 622766161.

It is a happy number.

161667226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×161667226² = 52272583925070152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161667221) 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 in 3 ways as a sum of consecutive naturals, for example, 5773816 + ... + 5773843.

It is an arithmetic number, because the mean of its divisors is an integer number (34642980).

Almost surely, 2^161667226 is an apocalyptic number.

161667226 is a deficient number, since it is larger than the sum of its proper divisors (115476614).

161667226 is a wasteful number, since it uses less digits than its factorization.

161667226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11547668.

The product of its digits is 36288, while the sum is 37.

The square root of 161667226 is about 12714.8427438172. The cubic root of 161667226 is about 544.7626562416.

The spelling of 161667226 in words is "one hundred sixty-one million, six hundred sixty-seven thousand, two hundred twenty-six".