166055700 has 72 divisors (see below), whose sum is σ = 490718592. Its totient is φ = 43335680.

The previous prime is 166055689. The next prime is 166055707. The reversal of 166055700 is 7550661.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166055707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8212 + ... + 19988.

It is an arithmetic number, because the mean of its divisors is an integer number (6815536).

Almost surely, 2^166055700 is an apocalyptic number.

166055700 is a gapful number since it is divisible by the number (10) 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 166055700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245359296).

166055700 is an abundant number, since it is smaller than the sum of its proper divisors (324662892).

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

166055700 is a wasteful number, since it uses less digits than its factorization.

166055700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11841 (or 11834 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 166055700 is about 12886.2601246444. The cubic root of 166055700 is about 549.6479289471.

The spelling of 166055700 in words is "one hundred sixty-six million, fifty-five thousand, seven hundred".