906658 has 4 divisors (see below), whose sum is σ = 1359990. Its totient is φ = 453328.

The previous prime is 906649. The next prime is 906673. The reversal of 906658 is 856609.

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

It can be written as a sum of positive squares in only one way, i.e., 480249 + 426409 = 693^2 + 653^2 .

It is an unprimeable number.

906658 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 226663 + ... + 226666.

2⁹⁰⁶⁶⁵⁸ is an apocalyptic number.

906658 is a deficient number, since it is larger than the sum of its proper divisors (453332).

906658 is a wasteful number, since it uses less digits than its factorization.

906658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453331.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 906658 is about 952.1859062179. The cubic root of 906658 is about 96.7864362982.

The spelling of 906658 in words is "nine hundred six thousand, six hundred fifty-eight".