190690 has 8 divisors (see below), whose sum is σ = 343260. Its totient is φ = 76272.

The previous prime is 190669. The next prime is 190699. The reversal of 190690 is 96091.

190690 is nontrivially palindromic in base 16.

190690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 175561 + 15129 = 419^2 + 123^2 .

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

It is a super-2 number, since 2×190690² = 72725352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190699) by changing a digit.

190690 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, 9525 + ... + 9544.

2¹⁹⁰⁶⁹⁰ is an apocalyptic number.

190690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190690 is a deficient number, since it is larger than the sum of its proper divisors (152570).

190690 is a wasteful number, since it uses less digits than its factorization.

190690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19076.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 190690 is about 436.6806613534. The cubic root of 190690 is about 57.5584786282.

The spelling of 190690 in words is "one hundred ninety thousand, six hundred ninety".