161606733 has 8 divisors (see below), whose sum is σ = 215620608. Its totient is φ = 107665344.

The previous prime is 161606729. The next prime is 161606791. The reversal of 161606733 is 337606161.

161606733 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 not a de Polignac number, because 161606733 - 2² = 161606729 is a prime.

It is a super-2 number, since 2×161606733² = 52233472301866578, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 161606694 and 161606703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12685 + ... + 22002.

It is an arithmetic number, because the mean of its divisors is an integer number (26952576).

Almost surely, 2^161606733 is an apocalyptic number.

It is an amenable number.

161606733 is a deficient number, since it is larger than the sum of its proper divisors (54013875).

161606733 is a wasteful number, since it uses less digits than its factorization.

161606733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36243.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 161606733 is about 12712.4636872638. The cubic root of 161606733 is about 544.6947009333.

The spelling of 161606733 in words is "one hundred sixty-one million, six hundred six thousand, seven hundred thirty-three".