166348685 has 8 divisors (see below), whose sum is σ = 204487416. Its totient is φ = 129832960.

The previous prime is 166348681. The next prime is 166348687. The reversal of 166348685 is 586843661.

It can be written as a sum of positive squares in 4 ways, for example, as 376996 + 165971689 = 614^2 + 12883^2 .

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

It is not a de Polignac number, because 166348685 - 2² = 166348681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166348681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405524 + ... + 405933.

It is an arithmetic number, because the mean of its divisors is an integer number (25560927).

Almost surely, 2^166348685 is an apocalyptic number.

It is an amenable number.

166348685 is a deficient number, since it is larger than the sum of its proper divisors (38138731).

166348685 is an equidigital number, since it uses as much as digits as its factorization.

166348685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811503.

The product of its digits is 829440, while the sum is 47.

The square root of 166348685 is about 12897.6232306577. The cubic root of 166348685 is about 549.9710012259.

The spelling of 166348685 in words is "one hundred sixty-six million, three hundred forty-eight thousand, six hundred eighty-five".