990195766 has 8 divisors (see below), whose sum is σ = 1697478480. Its totient is φ = 424369608.

The previous prime is 990195763. The next prime is 990195779. The reversal of 990195766 is 667591099.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990195763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35364121 + ... + 35364148.

It is an arithmetic number, because the mean of its divisors is an integer number (212184810).

Almost surely, 2^990195766 is an apocalyptic number.

990195766 is a deficient number, since it is larger than the sum of its proper divisors (707282714).

990195766 is a wasteful number, since it uses less digits than its factorization.

990195766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70728278.

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 990195766 is about 31467.3762172826. The cubic root of 990195766 is about 996.7211831096.

The spelling of 990195766 in words is "nine hundred ninety million, one hundred ninety-five thousand, seven hundred sixty-six".