161606446 has 16 divisors (see below), whose sum is σ = 247002048. Its totient is φ = 79279200.

The previous prime is 161606413. The next prime is 161606449. The reversal of 161606446 is 644606161.

It is a super-2 number, since 2×161606446² = 52233286777501832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606449) 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, 55056 + ... + 57916.

It is an arithmetic number, because the mean of its divisors is an integer number (15437628).

Almost surely, 2^161606446 is an apocalyptic number.

161606446 is a deficient number, since it is larger than the sum of its proper divisors (85395602).

161606446 is a wasteful number, since it uses less digits than its factorization.

161606446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 161606446 is about 12712.4523991243. The cubic root of 161606446 is about 544.6943784891.

The spelling of 161606446 in words is "one hundred sixty-one million, six hundred six thousand, four hundred forty-six".