990767 has 2 divisors, whose sum is σ = 990768. Its totient is φ = 990766.

The previous prime is 990761. The next prime is 990797. The reversal of 990767 is 767099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990767 - 2⁸ = 990511 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495383 + 495384.

It is an arithmetic number, because the mean of its divisors is an integer number (495384).

2⁹⁹⁰⁷⁶⁷ is an apocalyptic number.

990767 is a deficient number, since it is larger than the sum of its proper divisors (1).

990767 is an equidigital number, since it uses as much as digits as its factorization.

990767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 990767 is about 995.3727944846. The cubic root of 990767 is about 99.6912812414.

The spelling of 990767 in words is "nine hundred ninety thousand, seven hundred sixty-seven".