890670197 has 4 divisors (see below), whose sum is σ = 891545280. Its totient is φ = 889795116.

The previous prime is 890670133. The next prime is 890670281. The reversal of 890670197 is 791076098.

890670197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 890670197 - 2⁶ = 890670133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890670107) 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, 436013 + ... + 438050.

It is an arithmetic number, because the mean of its divisors is an integer number (222886320).

Almost surely, 2^890670197 is an apocalyptic number.

It is an amenable number.

890670197 is a deficient number, since it is larger than the sum of its proper divisors (875083).

890670197 is a wasteful number, since it uses less digits than its factorization.

890670197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875082.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 890670197 is about 29844.0981937803. The cubic root of 890670197 is about 962.1415576976.

The spelling of 890670197 in words is "eight hundred ninety million, six hundred seventy thousand, one hundred ninety-seven".