166560667 has 8 divisors (see below), whose sum is σ = 204997856. Its totient is φ = 131784192.

The previous prime is 166560661. The next prime is 166560673. The reversal of 166560667 is 766065661.

It is an interprime number because it is at equal distance from previous prime (166560661) and next prime (166560673).

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

It is a cyclic number.

It is not a de Polignac number, because 166560667 - 2²⁷ = 32342939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166560661) 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, 915078 + ... + 915259.

It is an arithmetic number, because the mean of its divisors is an integer number (25624732).

Almost surely, 2^166560667 is an apocalyptic number.

166560667 is a deficient number, since it is larger than the sum of its proper divisors (38437189).

166560667 is a wasteful number, since it uses less digits than its factorization.

166560667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830357.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 166560667 is about 12905.8384849649. The cubic root of 166560667 is about 550.2045156776.

The spelling of 166560667 in words is "one hundred sixty-six million, five hundred sixty thousand, six hundred sixty-seven".