161904066 has 8 divisors (see below), whose sum is σ = 323808144. Its totient is φ = 53968020.

The previous prime is 161904053. The next prime is 161904091. The reversal of 161904066 is 660409161.

161904066 is digitally balanced in base 2, 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.

161904066 is an admirable number.

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, 13492000 + ... + 13492011.

It is an arithmetic number, because the mean of its divisors is an integer number (40476018).

Almost surely, 2^161904066 is an apocalyptic number.

161904066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161904066 is a wasteful number, since it uses less digits than its factorization.

161904066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26984016.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 161904066 is about 12724.1528598174. The cubic root of 161904066 is about 545.0285494120.

The spelling of 161904066 in words is "one hundred sixty-one million, nine hundred four thousand, sixty-six".