158674 has 4 divisors (see below), whose sum is σ = 238014. Its totient is φ = 79336.

The previous prime is 158663. The next prime is 158699. The reversal of 158674 is 476851.

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

It can be written as a sum of positive squares in only one way, i.e., 154449 + 4225 = 393^2 + 65^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39667 + ... + 39670.

2¹⁵⁸⁶⁷⁴ is an apocalyptic number.

158674 is a deficient number, since it is larger than the sum of its proper divisors (79340).

158674 is an equidigital number, since it uses as much as digits as its factorization.

158674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79339.

The product of its digits is 6720, while the sum is 31.

The square root of 158674 is about 398.3390515629. The cubic root of 158674 is about 54.1379645440.

The spelling of 158674 in words is "one hundred fifty-eight thousand, six hundred seventy-four".