210090066 has 8 divisors (see below), whose sum is σ = 420180144. Its totient is φ = 70030020.

The previous prime is 210090061. The next prime is 210090077. The reversal of 210090066 is 660090012.

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

210090066 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (210090061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17507500 + ... + 17507511.

It is an arithmetic number, because the mean of its divisors is an integer number (52522518).

Almost surely, 2^210090066 is an apocalyptic number.

210090066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

210090066 is a wasteful number, since it uses less digits than its factorization.

210090066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35015016.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 210090066 is about 14494.4839852959. The cubic root of 210090066 is about 594.4771585714.

The spelling of 210090066 in words is "two hundred ten million, ninety thousand, sixty-six".