690060066 has 16 divisors (see below), whose sum is σ = 1380440064. Its totient is φ = 229966704.

The previous prime is 690060061. The next prime is 690060067. The reversal of 690060066 is 660060096.

It is not an unprimeable number, because it can be changed into a prime (690060061) 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 7 ways as a sum of consecutive naturals, for example, 21855 + ... + 43101.

It is an arithmetic number, because the mean of its divisors is an integer number (86277504).

Almost surely, 2^690060066 is an apocalyptic number.

690060066 is an abundant number, since it is smaller than the sum of its proper divisors (690379998).

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

690060066 is a wasteful number, since it uses less digits than its factorization.

690060066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26665.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 690060066 is about 26268.9943850160. The cubic root of 690060066 is about 883.6812328764.

It can be divided in two parts, 6900 and 60066, that added together give a palindrome (66966).

The spelling of 690060066 in words is "six hundred ninety million, sixty thousand, sixty-six".