158666673 has 48 divisors (see below), whose sum is σ = 246859200. Its totient is φ = 89865600.

The previous prime is 158666647. The next prime is 158666699. The reversal of 158666673 is 376666851.

It is an interprime number because it is at equal distance from previous prime (158666647) and next prime (158666699).

It is not a de Polignac number, because 158666673 - 2⁹ = 158666161 is a prime.

It is a super-2 number, since 2×158666673² = 50350226241777858, which contains 22 as substring.

Its product of digits (1088640) is a multiple of the sum of its prime factors (270).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158666623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1064803 + ... + 1064951.

It is an arithmetic number, because the mean of its divisors is an integer number (5142900).

Almost surely, 2^158666673 is an apocalyptic number.

It is an amenable number.

158666673 is a deficient number, since it is larger than the sum of its proper divisors (88192527).

158666673 is a wasteful number, since it uses less digits than its factorization.

158666673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 247 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 158666673 is about 12596.2960031908. The cubic root of 158666673 is about 541.3713123175.

The spelling of 158666673 in words is "one hundred fifty-eight million, six hundred sixty-six thousand, six hundred seventy-three".