864157 has 8 divisors (see below), whose sum is σ = 1012032. Its totient is φ = 722400.

The previous prime is 864151. The next prime is 864167. The reversal of 864157 is 751468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 864157 - 2⁷ = 864029 is a prime.

It is a d-powerful number, because it can be written as 8⁵ + 6⁵ + 1 + 4³ + 5 + 7⁷ .

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1219 + ... + 1792.

It is an arithmetic number, because the mean of its divisors is an integer number (126504).

2⁸⁶⁴¹⁵⁷ is an apocalyptic number.

It is an amenable number.

864157 is a deficient number, since it is larger than the sum of its proper divisors (147875).

864157 is a wasteful number, since it uses less digits than its factorization.

864157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059.

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

The square root of 864157 is about 929.6004518071. The cubic root of 864157 is about 95.2498317957.

The spelling of 864157 in words is "eight hundred sixty-four thousand, one hundred fifty-seven".