158282666 has 4 divisors (see below), whose sum is σ = 237424002. Its totient is φ = 79141332.

The previous prime is 158282653. The next prime is 158282669. The reversal of 158282666 is 666282851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666282851 = 13 ⋅51252527.

It can be written as a sum of positive squares in only one way, i.e., 151413025 + 6869641 = 12305^2 + 2621^2 .

It is not an unprimeable number, because it can be changed into a prime (158282669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39570665 + ... + 39570668.

Almost surely, 2^158282666 is an apocalyptic number.

158282666 is a deficient number, since it is larger than the sum of its proper divisors (79141336).

158282666 is an equidigital number, since it uses as much as digits as its factorization.

158282666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79141335.

The product of its digits is 276480, while the sum is 44.

The square root of 158282666 is about 12581.0439153514. The cubic root of 158282666 is about 540.9342150401.

It can be divided in two parts, 1582 and 82666, that added together give a palindrome (84248).

The spelling of 158282666 in words is "one hundred fifty-eight million, two hundred eighty-two thousand, six hundred sixty-six".