156874 has 4 divisors (see below), whose sum is σ = 235314. Its totient is φ = 78436.

The previous prime is 156841. The next prime is 156887. The reversal of 156874 is 478651.

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., 148225 + 8649 = 385^2 + 93^2 .

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 7.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39217 + ... + 39220.

2¹⁵⁶⁸⁷⁴ is an apocalyptic number.

156874 is a deficient number, since it is larger than the sum of its proper divisors (78440).

156874 is an equidigital number, since it uses as much as digits as its factorization.

156874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78439.

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

The square root of 156874 is about 396.0732255531. The cubic root of 156874 is about 53.9324716020.

It can be divided in two parts, 15 and 6874, that added together give a square (6889 = 83²).

The spelling of 156874 in words is "one hundred fifty-six thousand, eight hundred seventy-four".