660571166 has 8 divisors (see below), whose sum is σ = 991234920. Its totient is φ = 330159528.

The previous prime is 660571133. The next prime is 660571169. The reversal of 660571166 is 661175066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660571169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56336 + ... + 67043.

It is an arithmetic number, because the mean of its divisors is an integer number (123904365).

Almost surely, 2^660571166 is an apocalyptic number.

660571166 is a deficient number, since it is larger than the sum of its proper divisors (330663754).

660571166 is a wasteful number, since it uses less digits than its factorization.

660571166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126058.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 660571166 is about 25701.5790565483. The cubic root of 660571166 is about 870.9098536139.

The spelling of 660571166 in words is "six hundred sixty million, five hundred seventy-one thousand, one hundred sixty-six".