906645 has 8 divisors (see below), whose sum is σ = 1450656. Its totient is φ = 483536.

The previous prime is 906641. The next prime is 906649. The reversal of 906645 is 546609.

It is an interprime number because it is at equal distance from previous prime (906641) and next prime (906649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 906645 - 2² = 906641 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 906645.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30207 + ... + 30236.

It is an arithmetic number, because the mean of its divisors is an integer number (181332).

2⁹⁰⁶⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

906645 is a deficient number, since it is larger than the sum of its proper divisors (544011).

906645 is a wasteful number, since it uses less digits than its factorization.

906645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60451.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 906645 is about 952.1790797954. The cubic root of 906645 is about 96.7859737093.

It can be divided in two parts, 906 and 645, that added together give a palindrome (1551).

The spelling of 906645 in words is "nine hundred six thousand, six hundred forty-five".