990248065 has 12 divisors (see below), whose sum is σ = 1230691644. Its totient is φ = 764878016.

The previous prime is 990248053. The next prime is 990248081. The reversal of 990248065 is 560842099.

990248065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 95101504 + 895146561 = 9752^2 + 29919^2 .

It is not a de Polignac number, because 990248065 - 2²³ = 981859457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113542 + ... + 121951.

It is an arithmetic number, because the mean of its divisors is an integer number (102557637).

Almost surely, 2^990248065 is an apocalyptic number.

It is an amenable number.

990248065 is a deficient number, since it is larger than the sum of its proper divisors (240443579).

990248065 is a wasteful number, since it uses less digits than its factorization.

990248065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235556 (or 235527 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 990248065 is about 31468.2072098173. The cubic root of 990248065 is about 996.7387306846.

The spelling of 990248065 in words is "nine hundred ninety million, two hundred forty-eight thousand, sixty-five".