161332685 has 8 divisors (see below), whose sum is σ = 193902336. Its totient is φ = 128864080.

The previous prime is 161332681. The next prime is 161332697. The reversal of 161332685 is 586233161.

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

It is not a de Polignac number, because 161332685 - 2² = 161332681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161332681) 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, 21701 + ... + 28170.

It is an arithmetic number, because the mean of its divisors is an integer number (24237792).

Almost surely, 2^161332685 is an apocalyptic number.

It is an amenable number.

161332685 is a deficient number, since it is larger than the sum of its proper divisors (32569651).

161332685 is an equidigital number, since it uses as much as digits as its factorization.

161332685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50523.

The product of its digits is 25920, while the sum is 35.

The square root of 161332685 is about 12701.6804006399. The cubic root of 161332685 is about 544.3866342509.

The spelling of 161332685 in words is "one hundred sixty-one million, three hundred thirty-two thousand, six hundred eighty-five".