166587707 has 16 divisors (see below), whose sum is σ = 202030080. Its totient is φ = 135280800.

The previous prime is 166587697. The next prime is 166587721. The reversal of 166587707 is 707785661.

It is a cyclic number.

It is not a de Polignac number, because 166587707 - 2⁸ = 166587451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166587007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14357 + ... + 23222.

It is an arithmetic number, because the mean of its divisors is an integer number (12626880).

Almost surely, 2^166587707 is an apocalyptic number.

166587707 is a deficient number, since it is larger than the sum of its proper divisors (35442373).

166587707 is a wasteful number, since it uses less digits than its factorization.

166587707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37634.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 166587707 is about 12906.8860303328. The cubic root of 166587707 is about 550.2342880630.

The spelling of 166587707 in words is "one hundred sixty-six million, five hundred eighty-seven thousand, seven hundred seven".