166266886 has 8 divisors (see below), whose sum is σ = 249891840. Its totient is φ = 82969608.

The previous prime is 166266869. The next prime is 166266887. The reversal of 166266886 is 688662661.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166266887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80646 + ... + 82681.

It is an arithmetic number, because the mean of its divisors is an integer number (31236480).

Almost surely, 2^166266886 is an apocalyptic number.

166266886 is a deficient number, since it is larger than the sum of its proper divisors (83624954).

166266886 is a wasteful number, since it uses less digits than its factorization.

166266886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163838.

The product of its digits is 995328, while the sum is 49.

The square root of 166266886 is about 12894.4517525950. The cubic root of 166266886 is about 549.8808403011.

The spelling of 166266886 in words is "one hundred sixty-six million, two hundred sixty-six thousand, eight hundred eighty-six".