166559652 has 240 divisors, whose sum is σ = 541212672. Its totient is φ = 43623360.

The previous prime is 166559651. The next prime is 166559663. The reversal of 166559652 is 256955661.

166559652 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 596 + 52 = 666.

It is a super-2 number, since 2×166559652² = 55484235348722208, which contains 22 as substring.

Its product of digits (486000) is a multiple of the sum of its prime factors (180).

It is a junction number, because it is equal to n+sod(n) for n = 166559598 and 166559607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166559651) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1617033 + ... + 1617135.

Almost surely, 2^166559652 is an apocalyptic number.

166559652 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 166559652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270606336).

166559652 is an abundant number, since it is smaller than the sum of its proper divisors (374653020).

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

166559652 is a wasteful number, since it uses less digits than its factorization.

166559652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 169 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The square root of 166559652 is about 12905.7991616172. The cubic root of 166559652 is about 550.2033980494.

The spelling of 166559652 in words is "one hundred sixty-six million, five hundred fifty-nine thousand, six hundred fifty-two".