666702234 has 48 divisors (see below), whose sum is σ = 1590619680. Its totient is φ = 200136480.

The previous prime is 666702233. The next prime is 666702247. The reversal of 666702234 is 432207666.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (666702233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5452 + ... + 36920.

It is an arithmetic number, because the mean of its divisors is an integer number (33137910).

Almost surely, 2^666702234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666702234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795309840).

666702234 is an abundant number, since it is smaller than the sum of its proper divisors (923917446).

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

666702234 is a wasteful number, since it uses less digits than its factorization.

666702234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31595 (or 31592 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 666702234 is about 25820.5777239782. The cubic root of 666702234 is about 873.5959999238.

The spelling of 666702234 in words is "six hundred sixty-six million, seven hundred two thousand, two hundred thirty-four".