161396 has 12 divisors (see below), whose sum is σ = 285348. Its totient is φ = 79872.

The previous prime is 161387. The next prime is 161407. The reversal of 161396 is 693161.

It can be written as a sum of positive squares in 2 ways, for example, as 115600 + 45796 = 340^2 + 214^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161396.

It is an unprimeable number.

161396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500 + ... + 756.

It is an arithmetic number, because the mean of its divisors is an integer number (23779).

2¹⁶¹³⁹⁶ is an apocalyptic number.

It is an amenable number.

161396 is a deficient number, since it is larger than the sum of its proper divisors (123952).

161396 is a wasteful number, since it uses less digits than its factorization.

161396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 416 counting only the distinct ones).

The product of its digits is 972, while the sum is 26.

The square root of 161396 is about 401.7412102337. The cubic root of 161396 is about 54.4457839768.

The spelling of 161396 in words is "one hundred sixty-one thousand, three hundred ninety-six".