666252148 has 24 divisors (see below), whose sum is σ = 1234205280. Its totient is φ = 314156640.

The previous prime is 666252133. The next prime is 666252179. The reversal of 666252148 is 841252666.

It is a super-2 number, since 2×666252148² = 887783849429227808, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 666252148.

It is a congruent number.

It is an unprimeable number.

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, 61798 + ... + 71773.

It is an arithmetic number, because the mean of its divisors is an integer number (51425220).

Almost surely, 2^666252148 is an apocalyptic number.

It is an amenable number.

666252148 is a deficient number, since it is larger than the sum of its proper divisors (567953132).

666252148 is a wasteful number, since it uses less digits than its factorization.

666252148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133647 (or 133645 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 666252148 is about 25811.8606070930. The cubic root of 666252148 is about 873.3993694927.

The spelling of 666252148 in words is "six hundred sixty-six million, two hundred fifty-two thousand, one hundred forty-eight".