666227470 has 16 divisors (see below), whose sum is σ = 1199997360. Its totient is φ = 266315904.

The previous prime is 666227371. The next prime is 666227473. The reversal of 666227470 is 74722666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666227473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5307 + ... + 36886.

It is an arithmetic number, because the mean of its divisors is an integer number (74999835).

Almost surely, 2^666227470 is an apocalyptic number.

666227470 is a deficient number, since it is larger than the sum of its proper divisors (533769890).

666227470 is a wasteful number, since it uses less digits than its factorization.

666227470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43779.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 666227470 is about 25811.3825666120. The cubic root of 666227470 is about 873.3885857797.

The spelling of 666227470 in words is "six hundred sixty-six million, two hundred twenty-seven thousand, four hundred seventy".