990860066 has 24 divisors (see below), whose sum is σ = 1733529600. Its totient is φ = 423529512.

The previous prime is 990860053. The next prime is 990860093. The reversal of 990860066 is 660068099.

990860066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 990859999 and 990860026.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24335 + ... + 50733.

It is an arithmetic number, because the mean of its divisors is an integer number (72230400).

Almost surely, 2^990860066 is an apocalyptic number.

990860066 is a deficient number, since it is larger than the sum of its proper divisors (742669534).

990860066 is a wasteful number, since it uses less digits than its factorization.

990860066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26798 (or 26791 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 990860066 is about 31477.9298239258. The cubic root of 990860066 is about 996.9440258687.

The spelling of 990860066 in words is "nine hundred ninety million, eight hundred sixty thousand, sixty-six".