666948430 has 16 divisors (see below), whose sum is σ = 1202922000. Its totient is φ = 266242752.

The previous prime is 666948419. The next prime is 666948439. The reversal of 666948430 is 34849666.

666948430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666948439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61839 + ... + 71818.

It is an arithmetic number, because the mean of its divisors is an integer number (75182625).

Almost surely, 2^666948430 is an apocalyptic number.

666948430 is a deficient number, since it is larger than the sum of its proper divisors (535973570).

666948430 is a wasteful number, since it uses less digits than its factorization.

666948430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134163.

The product of its (nonzero) digits is 746496, while the sum is 46.

The square root of 666948430 is about 25825.3447218038. The cubic root of 666948430 is about 873.7035188737.

It can be divided in two parts, 66 and 6948430, that added together give a palindrome (6948496).

The spelling of 666948430 in words is "six hundred sixty-six million, nine hundred forty-eight thousand, four hundred thirty".