166601607 has 8 divisors (see below), whose sum is σ = 229795440. Its totient is φ = 107237760.

The previous prime is 166601593. The next prime is 166601609. The reversal of 166601607 is 706106661.

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

It is not a de Polignac number, because 166601607 - 2¹⁰ = 166600583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166601609) 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, 957394 + ... + 957567.

It is an arithmetic number, because the mean of its divisors is an integer number (28724430).

Almost surely, 2^166601607 is an apocalyptic number.

166601607 is a deficient number, since it is larger than the sum of its proper divisors (63193833).

166601607 is a wasteful number, since it uses less digits than its factorization.

166601607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914993.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 166601607 is about 12907.4244913538. The cubic root of 166601607 is about 550.2495914008.

The spelling of 166601607 in words is "one hundred sixty-six million, six hundred one thousand, six hundred seven".