166343506 has 16 divisors (see below), whose sum is σ = 288771840. Its totient is φ = 70387200.

The previous prime is 166343501. The next prime is 166343509. The reversal of 166343506 is 605343661.

166343506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166343501) 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, 74095 + ... + 76306.

It is an arithmetic number, because the mean of its divisors is an integer number (18048240).

Almost surely, 2^166343506 is an apocalyptic number.

166343506 is a deficient number, since it is larger than the sum of its proper divisors (122428334).

166343506 is a wasteful number, since it uses less digits than its factorization.

166343506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150489.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 166343506 is about 12897.4224556692. The cubic root of 166343506 is about 549.9652936778.

The spelling of 166343506 in words is "one hundred sixty-six million, three hundred forty-three thousand, five hundred six".