196815 has 8 divisors (see below), whose sum is σ = 314928. Its totient is φ = 104960.

The previous prime is 196799. The next prime is 196817. The reversal of 196815 is 518691.

It is a happy number.

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

It is not a de Polignac number, because 196815 - 2⁴ = 196799 is a prime.

It is a super-2 number, since 2×196815² = 77472288450, which contains 22 as substring.

196815 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196817) 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, 6546 + ... + 6575.

It is an arithmetic number, because the mean of its divisors is an integer number (39366).

2¹⁹⁶⁸¹⁵ is an apocalyptic number.

196815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

196815 is a deficient number, since it is larger than the sum of its proper divisors (118113).

196815 is a wasteful number, since it uses less digits than its factorization.

196815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13129.

The product of its digits is 2160, while the sum is 30.

The square root of 196815 is about 443.6383662399. The cubic root of 196815 is about 58.1682589289.

The spelling of 196815 in words is "one hundred ninety-six thousand, eight hundred fifteen".