156847 has 4 divisors (see below), whose sum is σ = 159256. Its totient is φ = 154440.

The previous prime is 156841. The next prime is 156887. The reversal of 156847 is 748651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748651 = 59 ⋅12689.

It is a cyclic number.

It is not a de Polignac number, because 156847 - 2⁷ = 156719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156841) 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, 1104 + ... + 1237.

It is an arithmetic number, because the mean of its divisors is an integer number (39814).

2¹⁵⁶⁸⁴⁷ is an apocalyptic number.

156847 is a deficient number, since it is larger than the sum of its proper divisors (2409).

156847 is an equidigital number, since it uses as much as digits as its factorization.

156847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408.

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

The square root of 156847 is about 396.0391394799. The cubic root of 156847 is about 53.9293772709.

Subtracting from 156847 its sum of digits (31), we obtain a square (156816 = 396²).

The spelling of 156847 in words is "one hundred fifty-six thousand, eight hundred forty-seven".