666144170 has 32 divisors (see below), whose sum is σ = 1260800640. Its totient is φ = 252915520.

The previous prime is 666144163. The next prime is 666144197. The reversal of 666144170 is 71441666.

It is a self number, because there is not a number n which added to its sum of digits gives 666144170.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19076 + ... + 41184.

It is an arithmetic number, because the mean of its divisors is an integer number (39400020).

Almost surely, 2^666144170 is an apocalyptic number.

666144170 is a deficient number, since it is larger than the sum of its proper divisors (594656470).

666144170 is a wasteful number, since it uses less digits than its factorization.

666144170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22270.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 666144170 is about 25809.7688869932. The cubic root of 666144170 is about 873.3521836474.

The spelling of 666144170 in words is "six hundred sixty-six million, one hundred forty-four thousand, one hundred seventy".