166620432 has 40 divisors (see below), whose sum is σ = 469568160. Its totient is φ = 50490880.

The previous prime is 166620431. The next prime is 166620437. The reversal of 166620432 is 234026661.

166620432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×166620432³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166620432.

It is not an unprimeable number, because it can be changed into a prime (166620431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157257 + ... + 158312.

It is an arithmetic number, because the mean of its divisors is an integer number (11739204).

Almost surely, 2^166620432 is an apocalyptic number.

166620432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166620432 is an abundant number, since it is smaller than the sum of its proper divisors (302947728).

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

166620432 is a wasteful number, since it uses less digits than its factorization.

166620432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315591 (or 315585 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 166620432 is about 12908.1537022147. The cubic root of 166620432 is about 550.2703156076.

The spelling of 166620432 in words is "one hundred sixty-six million, six hundred twenty thousand, four hundred thirty-two".