990066 has 32 divisors (see below), whose sum is σ = 2469888. Its totient is φ = 257040.

The previous prime is 990053. The next prime is 990137. The reversal of 990066 is 660099.

990066 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is an unprimeable number.

990066 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610 + ... + 1533.

It is an arithmetic number, because the mean of its divisors is an integer number (77184).

2⁹⁹⁰⁰⁶⁶ is an apocalyptic number.

990066 is an abundant number, since it is smaller than the sum of its proper divisors (1479822).

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

990066 is a wasteful number, since it uses less digits than its factorization.

990066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 990066 is about 995.0206028018. The cubic root of 990066 is about 99.6677640820.

The spelling of 990066 in words is "nine hundred ninety thousand, sixty-six".