166341487 has 4 divisors (see below), whose sum is σ = 179137000. Its totient is φ = 153545976.

The previous prime is 166341437. The next prime is 166341491. The reversal of 166341487 is 784143661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166341487 - 2¹⁵ = 166308719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166341407) by changing a digit.

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, 6397737 + ... + 6397762.

It is an arithmetic number, because the mean of its divisors is an integer number (44784250).

Almost surely, 2^166341487 is an apocalyptic number.

166341487 is a deficient number, since it is larger than the sum of its proper divisors (12795513).

166341487 is a wasteful number, since it uses less digits than its factorization.

166341487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12795512.

The product of its digits is 96768, while the sum is 40.

The square root of 166341487 is about 12897.3441839783. The cubic root of 166341487 is about 549.9630685946.

The spelling of 166341487 in words is "one hundred sixty-six million, three hundred forty-one thousand, four hundred eighty-seven".