161072678 has 8 divisors (see below), whose sum is σ = 260194368. Its totient is φ = 74341224.

The previous prime is 161072663. The next prime is 161072689. The reversal of 161072678 is 876270161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 3097526 + ... + 3097577.

It is an arithmetic number, because the mean of its divisors is an integer number (32524296).

Almost surely, 2^161072678 is an apocalyptic number.

161072678 is a deficient number, since it is larger than the sum of its proper divisors (99121690).

161072678 is a wasteful number, since it uses less digits than its factorization.

161072678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195118.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 161072678 is about 12691.4411317234. The cubic root of 161072678 is about 544.0940288553.

The spelling of 161072678 in words is "one hundred sixty-one million, seventy-two thousand, six hundred seventy-eight".