166661035 has 8 divisors (see below), whose sum is σ = 202055616. Its totient is φ = 131953920.

The previous prime is 166661029. The next prime is 166661039. The reversal of 166661035 is 530166661.

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

It is not a de Polignac number, because 166661035 - 2²³ = 158272427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166661039) 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, 171331 + ... + 172300.

It is an arithmetic number, because the mean of its divisors is an integer number (25256952).

Almost surely, 2^166661035 is an apocalyptic number.

166661035 is a deficient number, since it is larger than the sum of its proper divisors (35394581).

166661035 is an equidigital number, since it uses as much as digits as its factorization.

166661035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343733.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 166661035 is about 12909.7263720034. The cubic root of 166661035 is about 550.3150096281.

The spelling of 166661035 in words is "one hundred sixty-six million, six hundred sixty-one thousand, thirty-five".