161784068 has 12 divisors (see below), whose sum is σ = 283913280. Its totient is φ = 80665992.

The previous prime is 161784061. The next prime is 161784101. The reversal of 161784068 is 860487161.

It is not an unprimeable number, because it can be changed into a prime (161784061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54896 + ... + 57767.

It is an arithmetic number, because the mean of its divisors is an integer number (23659440).

Almost surely, 2^161784068 is an apocalyptic number.

It is an amenable number.

161784068 is a deficient number, since it is larger than the sum of its proper divisors (122129212).

161784068 is a wasteful number, since it uses less digits than its factorization.

161784068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113026 (or 113024 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 161784068 is about 12719.4366227439. The cubic root of 161784068 is about 544.8938636849.

The spelling of 161784068 in words is "one hundred sixty-one million, seven hundred eighty-four thousand, sixty-eight".