999763 has 2 divisors, whose sum is σ = 999764. Its totient is φ = 999762.

The previous prime is 999749. The next prime is 999769. The reversal of 999763 is 367999.

999763 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999763 - 2¹⁷ = 868691 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (999769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499881 + 499882.

It is an arithmetic number, because the mean of its divisors is an integer number (499882).

2⁹⁹⁹⁷⁶³ is an apocalyptic number.

999763 is a deficient number, since it is larger than the sum of its proper divisors (1).

999763 is an equidigital number, since it uses as much as digits as its factorization.

999763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 43.

The square root of 999763 is about 999.8814929780. The cubic root of 999763 is about 99.9920993758.

The spelling of 999763 in words is "nine hundred ninety-nine thousand, seven hundred sixty-three".