990761522 has 8 divisors (see below), whose sum is σ = 1488812076. Its totient is φ = 494490832.

The previous prime is 990761521. The next prime is 990761549. The reversal of 990761522 is 225167099.

990761522 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 803098921 + 187662601 = 28339^2 + 13699^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 990761522.

It is not an unprimeable number, because it can be changed into a prime (990761521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443573 + ... + 445800.

Almost surely, 2^990761522 is an apocalyptic number.

990761522 is a deficient number, since it is larger than the sum of its proper divisors (498050554).

990761522 is a wasteful number, since it uses less digits than its factorization.

990761522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889932.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 990761522 is about 31476.3644978260. The cubic root of 990761522 is about 996.9109750836.

The spelling of 990761522 in words is "nine hundred ninety million, seven hundred sixty-one thousand, five hundred twenty-two".