161692 has 6 divisors (see below), whose sum is σ = 282968. Its totient is φ = 80844.

The previous prime is 161683. The next prime is 161717. The reversal of 161692 is 296161.

It is a super-2 number, since 2×161692² = 52288605728, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

161692 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20208 + ... + 20215.

2¹⁶¹⁶⁹² is an apocalyptic number.

It is an amenable number.

161692 is a deficient number, since it is larger than the sum of its proper divisors (121276).

161692 is a wasteful number, since it uses less digits than its factorization.

161692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40427 (or 40425 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 161692 is about 402.1094378400. The cubic root of 161692 is about 54.4790481425.

It can be divided in two parts, 16 and 1692, that multiplied together give a palindrome (27072).

The spelling of 161692 in words is "one hundred sixty-one thousand, six hundred ninety-two".