166870829 has 8 divisors (see below), whose sum is σ = 168625152. Its totient is φ = 165121600.

The previous prime is 166870811. The next prime is 166870841. The reversal of 166870829 is 928078661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166870829 is a prime.

It is a super-2 number, since 2×166870829² = 55691747142294482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166870859) 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 7 ways as a sum of consecutive naturals, for example, 129422 + ... + 130704.

It is an arithmetic number, because the mean of its divisors is an integer number (21078144).

Almost surely, 2^166870829 is an apocalyptic number.

It is an amenable number.

166870829 is a deficient number, since it is larger than the sum of its proper divisors (1754323).

166870829 is a wasteful number, since it uses less digits than its factorization.

166870829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 166870829 is about 12917.8492404889. The cubic root of 166870829 is about 550.5458261809.

The spelling of 166870829 in words is "one hundred sixty-six million, eight hundred seventy thousand, eight hundred twenty-nine".