161605336 has 16 divisors (see below), whose sum is σ = 318958200. Its totient is φ = 76549824.

The previous prime is 161605333. The next prime is 161605357. The reversal of 161605336 is 633506161.

161605336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161605336² = 52232569247345792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161605298 and 161605307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161605331) 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, 531445 + ... + 531748.

Almost surely, 2^161605336 is an apocalyptic number.

It is an amenable number.

161605336 is a deficient number, since it is larger than the sum of its proper divisors (157352864).

161605336 is a wasteful number, since it uses less digits than its factorization.

161605336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063218 (or 1063214 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 161605336 is about 12712.4087410687. The cubic root of 161605336 is about 544.6931314016.

The spelling of 161605336 in words is "one hundred sixty-one million, six hundred five thousand, three hundred thirty-six".