196690 has 32 divisors (see below), whose sum is σ = 408240. Its totient is φ = 67584.

The previous prime is 196687. The next prime is 196699. The reversal of 196690 is 96691.

196690 = T₄₃ + T₄₄ + ... + T₁₀₇.

It can be written as a sum of positive squares in 8 ways, for example, as 45369 + 151321 = 213^2 + 389^2 .

It is a super-2 number, since 2×196690² = 77373912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (196699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2166 + ... + 2254.

2¹⁹⁶⁶⁹⁰ is an apocalyptic number.

196690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196690 is an abundant number, since it is smaller than the sum of its proper divisors (211550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196690 is a wasteful number, since it uses less digits than its factorization.

196690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 196690 is about 443.4974633524. The cubic root of 196690 is about 58.1559418253.

Subtracting from 196690 its reverse (96691), we obtain a palindrome (99999).

The spelling of 196690 in words is "one hundred ninety-six thousand, six hundred ninety".