906553 has 4 divisors (see below), whose sum is σ = 914980. Its totient is φ = 898128.

The previous prime is 906541. The next prime is 906557. The reversal of 906553 is 355609.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 110889 = 892^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 906553 - 2¹³ = 898361 is a prime.

It is a Duffinian number.

906553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (906557) 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, 4050 + ... + 4267.

It is an arithmetic number, because the mean of its divisors is an integer number (228745).

2⁹⁰⁶⁵⁵³ is an apocalyptic number.

It is an amenable number.

906553 is a deficient number, since it is larger than the sum of its proper divisors (8427).

906553 is a wasteful number, since it uses less digits than its factorization.

906553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 906553 is about 952.1307683296. The cubic root of 906553 is about 96.7826998771.

The spelling of 906553 in words is "nine hundred six thousand, five hundred fifty-three".