890066 has 4 divisors (see below), whose sum is σ = 1335102. Its totient is φ = 445032.

The previous prime is 890063. The next prime is 890083. The reversal of 890066 is 660098.

890066 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.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 429025 = 679^2 + 655^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (890063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222515 + ... + 222518.

2⁸⁹⁰⁰⁶⁶ is an apocalyptic number.

890066 is a deficient number, since it is larger than the sum of its proper divisors (445036).

890066 is a wasteful number, since it uses less digits than its factorization.

890066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445035.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 890066 is about 943.4330924872. The cubic root of 890066 is about 96.1923948328.

The spelling of 890066 in words is "eight hundred ninety thousand, sixty-six".