161577068 has 6 divisors (see below), whose sum is σ = 282759876. Its totient is φ = 80788532.

The previous prime is 161577049. The next prime is 161577077. The reversal of 161577068 is 860775161.

It is a super-2 number, since 2×161577068² = 52214297806953248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20197130 + ... + 20197137.

It is an arithmetic number, because the mean of its divisors is an integer number (47126646).

Almost surely, 2^161577068 is an apocalyptic number.

It is an amenable number.

161577068 is a deficient number, since it is larger than the sum of its proper divisors (121182808).

161577068 is a wasteful number, since it uses less digits than its factorization.

161577068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40394271 (or 40394269 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 161577068 is about 12711.2968653871. The cubic root of 161577068 is about 544.6613703148.

The spelling of 161577068 in words is "one hundred sixty-one million, five hundred seventy-seven thousand, sixty-eight".