190897 has 4 divisors (see below), whose sum is σ = 218176. Its totient is φ = 163620.

The previous prime is 190891. The next prime is 190901. The reversal of 190897 is 798091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798091 = 7 ⋅114013.

It is a cyclic number.

It is not a de Polignac number, because 190897 - 2³ = 190889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13629 + ... + 13642.

It is an arithmetic number, because the mean of its divisors is an integer number (54544).

2¹⁹⁰⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

190897 is a deficient number, since it is larger than the sum of its proper divisors (27279).

190897 is an equidigital number, since it uses as much as digits as its factorization.

190897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27278.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 190897 is about 436.9176123710. The cubic root of 190897 is about 57.5792982769.

The spelling of 190897 in words is "one hundred ninety thousand, eight hundred ninety-seven".