906644 has 24 divisors (see below), whose sum is σ = 1713600. Its totient is φ = 418176.

The previous prime is 906641. The next prime is 906649. The reversal of 906644 is 446609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4457 + ... + 4655.

It is an arithmetic number, because the mean of its divisors is an integer number (71400).

2⁹⁰⁶⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

906644 is a deficient number, since it is larger than the sum of its proper divisors (806956).

906644 is a wasteful number, since it uses less digits than its factorization.

906644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 906644 is about 952.1785546839. The cubic root of 906644 is about 96.7859381254.

The spelling of 906644 in words is "nine hundred six thousand, six hundred forty-four".