906623 has 4 divisors (see below), whose sum is σ = 954360. Its totient is φ = 858888.

The previous prime is 906617. The next prime is 906641. The reversal of 906623 is 326609.

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 906623 - 2¹⁰ = 905599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 906592 and 906601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906613) 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, 23840 + ... + 23877.

It is an arithmetic number, because the mean of its divisors is an integer number (238590).

2⁹⁰⁶⁶²³ is an apocalyptic number.

906623 is a deficient number, since it is larger than the sum of its proper divisors (47737).

906623 is a wasteful number, since it uses less digits than its factorization.

906623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47736.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 906623 is about 952.1675272766. The cubic root of 906623 is about 96.7851908566.

The spelling of 906623 in words is "nine hundred six thousand, six hundred twenty-three".