158066217 has 24 divisors (see below), whose sum is σ = 233985024. Its totient is φ = 102777984.

The previous prime is 158066197. The next prime is 158066231. The reversal of 158066217 is 712660851.

158066217 is a `hidden beast` number, since 1 + 580 + 6 + 62 + 17 = 666.

It is not a de Polignac number, because 158066217 - 2⁷ = 158066089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158066267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182728 + ... + 183590.

It is an arithmetic number, because the mean of its divisors is an integer number (9749376).

Almost surely, 2^158066217 is an apocalyptic number.

It is an amenable number.

158066217 is a deficient number, since it is larger than the sum of its proper divisors (75918807).

158066217 is a wasteful number, since it uses less digits than its factorization.

158066217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 158066217 is about 12572.4387848977. The cubic root of 158066217 is about 540.6875296135.

The spelling of 158066217 in words is "one hundred fifty-eight million, sixty-six thousand, two hundred seventeen".