166961066 has 8 divisors (see below), whose sum is σ = 250685760. Its totient is φ = 83399148.

The previous prime is 166961051. The next prime is 166961083. The reversal of 166961066 is 660169661.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38096 + ... + 42251.

It is an arithmetic number, because the mean of its divisors is an integer number (31335720).

Almost surely, 2^166961066 is an apocalyptic number.

166961066 is a deficient number, since it is larger than the sum of its proper divisors (83724694).

166961066 is a wasteful number, since it uses less digits than its factorization.

166961066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81388.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 166961066 is about 12921.3414938233. The cubic root of 166961066 is about 550.6450459422.

The spelling of 166961066 in words is "one hundred sixty-six million, nine hundred sixty-one thousand, sixty-six".