906691 has 2 divisors, whose sum is σ = 906692. Its totient is φ = 906690.

The previous prime is 906679. The next prime is 906701. The reversal of 906691 is 196609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 906691 - 2⁹ = 906179 is a prime.

It is not a weakly prime, because it can be changed into another prime (906601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453345 + 453346.

It is an arithmetic number, because the mean of its divisors is an integer number (453346).

2⁹⁰⁶⁶⁹¹ is an apocalyptic number.

906691 is a deficient number, since it is larger than the sum of its proper divisors (1).

906691 is an equidigital number, since it uses as much as digits as its factorization.

906691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 906691 is about 952.2032346091. The cubic root of 906691 is about 96.7876105424.

The spelling of 906691 in words is "nine hundred six thousand, six hundred ninety-one".