196405 has 8 divisors (see below), whose sum is σ = 257184. Its totient is φ = 142800.

The previous prime is 196387. The next prime is 196429. The reversal of 196405 is 504691.

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

It is not a de Polignac number, because 196405 - 2⁷ = 196277 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1731 + ... + 1840.

It is an arithmetic number, because the mean of its divisors is an integer number (32148).

2¹⁹⁶⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

196405 is a deficient number, since it is larger than the sum of its proper divisors (60779).

196405 is a wasteful number, since it uses less digits than its factorization.

196405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 196405 is about 443.1760372583. The cubic root of 196405 is about 58.1278393032.

The spelling of 196405 in words is "one hundred ninety-six thousand, four hundred five".