864156 has 48 divisors (see below), whose sum is σ = 2193408. Its totient is φ = 264000.

The previous prime is 864151. The next prime is 864167. The reversal of 864156 is 651468.

864156 = T₁₃₅ + T₁₃₆ + ... + T₁₉₆.

Its product of digits (5760) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864156.

It is not an unprimeable number, because it can be changed into a prime (864151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8506 + ... + 8606.

It is an arithmetic number, because the mean of its divisors is an integer number (45696).

2⁸⁶⁴¹⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096704).

864156 is an abundant number, since it is smaller than the sum of its proper divisors (1329252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864156 is a wasteful number, since it uses less digits than its factorization.

864156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 160 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 864156 is about 929.5999139415. The cubic root of 864156 is about 95.2497950547.

The spelling of 864156 in words is "eight hundred sixty-four thousand, one hundred fifty-six".