166625860 has 24 divisors (see below), whose sum is σ = 358053696. Its totient is φ = 65100000.

The previous prime is 166625821. The next prime is 166625867. The reversal of 166625860 is 68526661.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (166625867) 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, 96016 + ... + 97735.

It is an arithmetic number, because the mean of its divisors is an integer number (14918904).

Almost surely, 2^166625860 is an apocalyptic number.

166625860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166625860 is an abundant number, since it is smaller than the sum of its proper divisors (191427836).

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

166625860 is a wasteful number, since it uses less digits than its factorization.

166625860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193803 (or 193801 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 166625860 is about 12908.3639552036. The cubic root of 166625860 is about 550.2762909349.

It can be divided in two parts, 16662 and 5860, that added together give a palindrome (22522).

The spelling of 166625860 in words is "one hundred sixty-six million, six hundred twenty-five thousand, eight hundred sixty".