990706236 has 48 divisors (see below), whose sum is σ = 2575322400. Its totient is φ = 294319872.

The previous prime is 990706231. The next prime is 990706243. The reversal of 990706236 is 632607099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990706231) 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 15 ways as a sum of consecutive naturals, for example, 104971 + ... + 114018.

It is an arithmetic number, because the mean of its divisors is an integer number (53652550).

Almost surely, 2^990706236 is an apocalyptic number.

It is an amenable number.

990706236 is an abundant number, since it is smaller than the sum of its proper divisors (1584616164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990706236 is a wasteful number, since it uses less digits than its factorization.

990706236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219038 (or 219036 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 990706236 is about 31475.4862710650. The cubic root of 990706236 is about 996.8924316891.

The spelling of 990706236 in words is "nine hundred ninety million, seven hundred six thousand, two hundred thirty-six".