190669 has 2 divisors, whose sum is σ = 190670. Its totient is φ = 190668.

The previous prime is 190667. The next prime is 190699. The reversal of 190669 is 966091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189225 + 1444 = 435^2 + 38^2 .

It is a cyclic number.

It is not a de Polignac number, because 190669 - 2¹ = 190667 is a prime.

It is a super-2 number, since 2×190669² = 72709335122, which contains 22 as substring.

Together with 190667, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 190669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95334 + 95335.

It is an arithmetic number, because the mean of its divisors is an integer number (95335).

2¹⁹⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

190669 is a deficient number, since it is larger than the sum of its proper divisors (1).

190669 is an equidigital number, since it uses as much as digits as its factorization.

190669 is an evil number, because the sum of its binary digits is even.

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

The square root of 190669 is about 436.6566156604. The cubic root of 190669 is about 57.5563656482.

The spelling of 190669 in words is "one hundred ninety thousand, six hundred sixty-nine".