161226606 has 16 divisors (see below), whose sum is σ = 341421264. Its totient is φ = 50580864.

The previous prime is 161226601. The next prime is 161226607. The reversal of 161226606 is 606622161.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161226601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790225 + ... + 790428.

It is an arithmetic number, because the mean of its divisors is an integer number (21338829).

Almost surely, 2^161226606 is an apocalyptic number.

161226606 is an abundant number, since it is smaller than the sum of its proper divisors (180194658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161226606 is a wasteful number, since it uses less digits than its factorization.

161226606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580675.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 161226606 is about 12697.5039279380. The cubic root of 161226606 is about 544.2672935829.

Adding to 161226606 its reverse (606622161), we get a palindrome (767848767).

The spelling of 161226606 in words is "one hundred sixty-one million, two hundred twenty-six thousand, six hundred six".