990802617 has 32 divisors (see below), whose sum is σ = 1545937920. Its totient is φ = 552726720.

The previous prime is 990802607. The next prime is 990802643. The reversal of 990802617 is 716208099.

It is not a de Polignac number, because 990802617 - 2⁸ = 990802361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990802607) 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, 232734 + ... + 236952.

It is an arithmetic number, because the mean of its divisors is an integer number (48310560).

Almost surely, 2^990802617 is an apocalyptic number.

It is an amenable number.

990802617 is a deficient number, since it is larger than the sum of its proper divisors (555135303).

990802617 is a wasteful number, since it uses less digits than its factorization.

990802617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 990802617 is about 31477.0172824555. The cubic root of 990802617 is about 996.9247582491.

The spelling of 990802617 in words is "nine hundred ninety million, eight hundred two thousand, six hundred seventeen".