990572066 has 24 divisors (see below), whose sum is σ = 1677372060. Its totient is φ = 438086880.

The previous prime is 990572059. The next prime is 990572069. The reversal of 990572066 is 660275099.

990572066 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 2 ways, for example, as 990423841 + 148225 = 31471^2 + 385^2 .

It is not an unprimeable number, because it can be changed into a prime (990572069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46361 + ... + 64268.

Almost surely, 2^990572066 is an apocalyptic number.

990572066 is a deficient number, since it is larger than the sum of its proper divisors (686799994).

990572066 is a wasteful number, since it uses less digits than its factorization.

990572066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110690 (or 110679 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 990572066 is about 31473.3548577205. The cubic root of 990572066 is about 996.8474270614.

The spelling of 990572066 in words is "nine hundred ninety million, five hundred seventy-two thousand, sixty-six".