166121366 has 8 divisors (see below), whose sum is σ = 251649504. Its totient is φ = 82238200.

The previous prime is 166121353. The next prime is 166121377. The reversal of 166121366 is 663121661.

166121366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 410990 + ... + 411393.

It is an arithmetic number, because the mean of its divisors is an integer number (31456188).

Almost surely, 2^166121366 is an apocalyptic number.

166121366 is a deficient number, since it is larger than the sum of its proper divisors (85528138).

166121366 is a wasteful number, since it uses less digits than its factorization.

166121366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822486.

The product of its digits is 7776, while the sum is 32.

The square root of 166121366 is about 12888.8077803961. The cubic root of 166121366 is about 549.7203713551.

The spelling of 166121366 in words is "one hundred sixty-six million, one hundred twenty-one thousand, three hundred sixty-six".