166873870 has 32 divisors (see below), whose sum is σ = 318917088. Its totient is φ = 62650368.

The previous prime is 166873867. The next prime is 166873879. The reversal of 166873870 is 78378661.

166873870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 166873870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166873879) 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, 72477 + ... + 74743.

It is an arithmetic number, because the mean of its divisors is an integer number (9966159).

Almost surely, 2^166873870 is an apocalyptic number.

166873870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166873870 is a deficient number, since it is larger than the sum of its proper divisors (152043218).

166873870 is a wasteful number, since it uses less digits than its factorization.

166873870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 166873870 is about 12917.9669453053. The cubic root of 166873870 is about 550.5491704835.

The spelling of 166873870 in words is "one hundred sixty-six million, eight hundred seventy-three thousand, eight hundred seventy".