166870816 has 24 divisors (see below), whose sum is σ = 375459840. Its totient is φ = 71515968.

The previous prime is 166870811. The next prime is 166870841. The reversal of 166870816 is 618078661.

166870816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166870811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372256 + ... + 372703.

It is an arithmetic number, because the mean of its divisors is an integer number (15644160).

Almost surely, 2^166870816 is an apocalyptic number.

166870816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166870816 is an abundant number, since it is smaller than the sum of its proper divisors (208589024).

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

166870816 is an equidigital number, since it uses as much as digits as its factorization.

166870816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744976 (or 744968 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 166870816 is about 12917.8487373092. The cubic root of 166870816 is about 550.5458118842.

The spelling of 166870816 in words is "one hundred sixty-six million, eight hundred seventy thousand, eight hundred sixteen".