166658652 has 72 divisors (see below), whose sum is σ = 446409600. Its totient is φ = 52278048.

The previous prime is 166658627. The next prime is 166658683. The reversal of 166658652 is 256856661.

It is a happy number.

166658652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166658598 and 166658607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113499 + ... + 114957.

Almost surely, 2^166658652 is an apocalyptic number.

166658652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166658652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223204800).

166658652 is an abundant number, since it is smaller than the sum of its proper divisors (279750948).

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

166658652 is a wasteful number, since it uses less digits than its factorization.

166658652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655 (or 1650 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 166658652 is about 12909.6340769210. The cubic root of 166658652 is about 550.3123867256.

The spelling of 166658652 in words is "one hundred sixty-six million, six hundred fifty-eight thousand, six hundred fifty-two".