161596605 has 8 divisors (see below), whose sum is σ = 258554592. Its totient is φ = 86184848.

The previous prime is 161596573. The next prime is 161596657. The reversal of 161596605 is 506695161.

161596605 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.

It is a cyclic number.

It is not a de Polignac number, because 161596605 - 2⁵ = 161596573 is a prime.

It is a super-3 number, since 3×161596605³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5386539 + ... + 5386568.

It is an arithmetic number, because the mean of its divisors is an integer number (32319324).

Almost surely, 2^161596605 is an apocalyptic number.

161596605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161596605 is a deficient number, since it is larger than the sum of its proper divisors (96957987).

161596605 is a wasteful number, since it uses less digits than its factorization.

161596605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10773115.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 161596605 is about 12712.0653318019. The cubic root of 161596605 is about 544.6833219042.

The spelling of 161596605 in words is "one hundred sixty-one million, five hundred ninety-six thousand, six hundred five".