166706770 has 8 divisors (see below), whose sum is σ = 300072204. Its totient is φ = 66682704.

The previous prime is 166706767. The next prime is 166706797. The reversal of 166706770 is 77607661.

166706770 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 153983281 + 12723489 = 12409^2 + 3567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×166706770² = 55582294327665800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8335329 + ... + 8335348.

Almost surely, 2^166706770 is an apocalyptic number.

166706770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166706770 is a deficient number, since it is larger than the sum of its proper divisors (133365434).

166706770 is a wasteful number, since it uses less digits than its factorization.

166706770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16670684.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 166706770 is about 12911.4975893581. The cubic root of 166706770 is about 550.3653440390.

The spelling of 166706770 in words is "one hundred sixty-six million, seven hundred six thousand, seven hundred seventy".