990075007606 has 4 divisors (see below), whose sum is σ = 1485112511412. Its totient is φ = 495037503802.

The previous prime is 990075007561. The next prime is 990075007619. The reversal of 990075007606 is 606700570099.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 990075007606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247518751900 + ... + 247518751903.

It is an arithmetic number, because the mean of its divisors is an integer number (371278127853).

Almost surely, 2^990075007606 is an apocalyptic number.

990075007606 is a deficient number, since it is larger than the sum of its proper divisors (495037503806).

990075007606 is a wasteful number, since it uses less digits than its factorization.

990075007606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495037503805.

The product of its (nonzero) digits is 714420, while the sum is 49.

The spelling of 990075007606 in words is "nine hundred ninety billion, seventy-five million, seven thousand, six hundred six".