158685427 has 4 divisors (see below), whose sum is σ = 158742360. Its totient is φ = 158628496.

The previous prime is 158685403. The next prime is 158685433. The reversal of 158685427 is 724586851.

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 158685427 - 2⁷ = 158685299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158685467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24058 + ... + 29935.

It is an arithmetic number, because the mean of its divisors is an integer number (39685590).

Almost surely, 2^158685427 is an apocalyptic number.

158685427 is a deficient number, since it is larger than the sum of its proper divisors (56933).

158685427 is an equidigital number, since it uses as much as digits as its factorization.

158685427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56932.

The product of its digits is 537600, while the sum is 46.

The square root of 158685427 is about 12597.0404063812. The cubic root of 158685427 is about 541.3926410511.

The spelling of 158685427 in words is "one hundred fifty-eight million, six hundred eighty-five thousand, four hundred twenty-seven".