161606576 has 20 divisors (see below), whose sum is σ = 313373544. Its totient is φ = 80736000.

The previous prime is 161606527. The next prime is 161606581. The reversal of 161606576 is 675606161.

161606576 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161606576² = 52233370812887552, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19736 + ... + 26696.

Almost surely, 2^161606576 is an apocalyptic number.

161606576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161606576 is a deficient number, since it is larger than the sum of its proper divisors (151766968).

161606576 is a wasteful number, since it uses less digits than its factorization.

161606576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8420 (or 8414 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 161606576 is about 12712.4575122201. The cubic root of 161606576 is about 544.6945245440.

The spelling of 161606576 in words is "one hundred sixty-one million, six hundred six thousand, five hundred seventy-six".