906749 has 2 divisors, whose sum is σ = 906750. Its totient is φ = 906748.

The previous prime is 906727. The next prime is 906751. The reversal of 906749 is 947609.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 822649 + 84100 = 907^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 906749 - 2¹² = 902653 is a prime.

It is a Sophie Germain prime.

Together with 906751, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (906779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453374 + 453375.

It is an arithmetic number, because the mean of its divisors is an integer number (453375).

2⁹⁰⁶⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

906749 is a deficient number, since it is larger than the sum of its proper divisors (1).

906749 is an equidigital number, since it uses as much as digits as its factorization.

906749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 906749 is about 952.2336898052. The cubic root of 906749 is about 96.7896742964.

The spelling of 906749 in words is "nine hundred six thousand, seven hundred forty-nine".