666089148 has 12 divisors (see below), whose sum is σ = 1554208040. Its totient is φ = 222029712.

The previous prime is 666089147. The next prime is 666089159. The reversal of 666089148 is 841980666.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 666089097 and 666089106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666089141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27753703 + ... + 27753726.

Almost surely, 2^666089148 is an apocalyptic number.

It is an amenable number.

666089148 is an abundant number, since it is smaller than the sum of its proper divisors (888118892).

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

666089148 is a wasteful number, since it uses less digits than its factorization.

666089148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55507436 (or 55507434 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 666089148 is about 25808.7029507490. The cubic root of 666089148 is about 873.3281373478.

The spelling of 666089148 in words is "six hundred sixty-six million, eighty-nine thousand, one hundred forty-eight".