166247266 has 16 divisors (see below), whose sum is σ = 260495424. Its totient is φ = 79423344.

The previous prime is 166247261. The next prime is 166247269. The reversal of 166247266 is 662742661.

It is not an unprimeable number, because it can be changed into a prime (166247261) 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, 67000 + ... + 69436.

It is an arithmetic number, because the mean of its divisors is an integer number (16280964).

Almost surely, 2^166247266 is an apocalyptic number.

166247266 is a deficient number, since it is larger than the sum of its proper divisors (94248158).

166247266 is a wasteful number, since it uses less digits than its factorization.

166247266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945.

The product of its digits is 145152, while the sum is 40.

The square root of 166247266 is about 12893.6909378192. The cubic root of 166247266 is about 549.8592102445.

The spelling of 166247266 in words is "one hundred sixty-six million, two hundred forty-seven thousand, two hundred sixty-six".