166001652 has 36 divisors (see below), whose sum is σ = 433154176. Its totient is φ = 53548560.

The previous prime is 166001639. The next prime is 166001653. The reversal of 166001652 is 256100661.

It is a happy number.

166001652 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 0 + 1 + 652 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166001653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73258 + ... + 75489.

Almost surely, 2^166001652 is an apocalyptic number.

166001652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166001652 is an abundant number, since it is smaller than the sum of its proper divisors (267152524).

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

166001652 is a wasteful number, since it uses less digits than its factorization.

166001652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148788 (or 148783 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 166001652 is about 12884.1628365990. The cubic root of 166001652 is about 549.5882891296.

Subtracting 166001652 from its reverse (256100661), we obtain a palindrome (90099009).

The spelling of 166001652 in words is "one hundred sixty-six million, one thousand, six hundred fifty-two".