166626860 has 48 divisors (see below), whose sum is σ = 382475520. Its totient is φ = 60702720.

The previous prime is 166626851. The next prime is 166626869. The reversal of 166626860 is 68626661.

166626860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166626851) and next prime (166626869).

It is not an unprimeable number, because it can be changed into a prime (166626869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2636 + ... + 18444.

It is an arithmetic number, because the mean of its divisors is an integer number (7968240).

Almost surely, 2^166626860 is an apocalyptic number.

166626860 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 166626860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191237760).

166626860 is an abundant number, since it is smaller than the sum of its proper divisors (215848660).

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

166626860 is a wasteful number, since it uses less digits than its factorization.

166626860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15866 (or 15864 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 166626860 is about 12908.4026897211. The cubic root of 166626860 is about 550.2773917548.

The spelling of 166626860 in words is "one hundred sixty-six million, six hundred twenty-six thousand, eight hundred sixty".