166659630 has 16 divisors (see below), whose sum is σ = 399983184. Its totient is φ = 44442560.

The previous prime is 166659611. The next prime is 166659637. The reversal of 166659630 is 36956661.

166659630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166659637) 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, 2777631 + ... + 2777690.

It is an arithmetic number, because the mean of its divisors is an integer number (24998949).

Almost surely, 2^166659630 is an apocalyptic number.

166659630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166659630 is an abundant number, since it is smaller than the sum of its proper divisors (233323554).

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

166659630 is a wasteful number, since it uses less digits than its factorization.

166659630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555331.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 166659630 is about 12909.6719555533. The cubic root of 166659630 is about 550.3134631863.

The spelling of 166659630 in words is "one hundred sixty-six million, six hundred fifty-nine thousand, six hundred thirty".