166642652 has 36 divisors (see below), whose sum is σ = 322982520. Its totient is φ = 75171360.

The previous prime is 166642649. The next prime is 166642657. The reversal of 166642652 is 256246661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166642657) 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 11 ways as a sum of consecutive naturals, for example, 66038 + ... + 68514.

Almost surely, 2^166642652 is an apocalyptic number.

It is an amenable number.

166642652 is a deficient number, since it is larger than the sum of its proper divisors (156339868).

166642652 is a wasteful number, since it uses less digits than its factorization.

166642652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642 (or 2629 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 166642652 is about 12909.0143698115. The cubic root of 166642652 is about 550.2947753188.

The spelling of 166642652 in words is "one hundred sixty-six million, six hundred forty-two thousand, six hundred fifty-two".