166700870 has 32 divisors (see below), whose sum is σ = 360979200. Its totient is φ = 54146016.

The previous prime is 166700843. The next prime is 166700879. The reversal of 166700870 is 78007661.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 166700870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166700879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61340 + ... + 63999.

It is an arithmetic number, because the mean of its divisors is an integer number (11280600).

Almost surely, 2^166700870 is an apocalyptic number.

166700870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166700870 is an abundant number, since it is smaller than the sum of its proper divisors (194278330).

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

166700870 is a wasteful number, since it uses less digits than its factorization.

166700870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125372.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 166700870 is about 12911.2691088057. The cubic root of 166700870 is about 550.3588512136.

The spelling of 166700870 in words is "one hundred sixty-six million, seven hundred thousand, eight hundred seventy".