990598763 has 32 divisors (see below), whose sum is σ = 1303879680. Its totient is φ = 729108000.

The previous prime is 990598751. The next prime is 990598787. The reversal of 990598763 is 367895099.

It is a cyclic number.

It is not a de Polignac number, because 990598763 - 2¹⁰ = 990597739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990598699 and 990598708.

It is not an unprimeable number, because it can be changed into a prime (990598463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 629768 + ... + 631338.

It is an arithmetic number, because the mean of its divisors is an integer number (40746240).

Almost surely, 2^990598763 is an apocalyptic number.

990598763 is a deficient number, since it is larger than the sum of its proper divisors (313280917).

990598763 is a wasteful number, since it uses less digits than its factorization.

990598763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 990598763 is about 31473.7789755218. The cubic root of 990598763 is about 996.8563823569.

The spelling of 990598763 in words is "nine hundred ninety million, five hundred ninety-eight thousand, seven hundred sixty-three".