890663 has 4 divisors (see below), whose sum is σ = 937560. Its totient is φ = 843768.

The previous prime is 890657. The next prime is 890671. The reversal of 890663 is 366098.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 890663 - 2¹⁰ = 889639 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 (890653) 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, 23420 + ... + 23457.

It is an arithmetic number, because the mean of its divisors is an integer number (234390).

2⁸⁹⁰⁶⁶³ is an apocalyptic number.

890663 is a deficient number, since it is larger than the sum of its proper divisors (46897).

890663 is a wasteful number, since it uses less digits than its factorization.

890663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46896.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 890663 is about 943.7494370859. The cubic root of 890663 is about 96.2138966184.

The spelling of 890663 in words is "eight hundred ninety thousand, six hundred sixty-three".