860401 has 4 divisors (see below), whose sum is σ = 890100. Its totient is φ = 830704.

The previous prime is 860399. The next prime is 860413. The reversal of 860401 is 104068.

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

It can be written as a sum of positive squares in 2 ways, for example, as 179776 + 680625 = 424^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 860401 - 2¹ = 860399 is a prime.

It is a Duffinian number.

860401 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860441) 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, 14806 + ... + 14863.

It is an arithmetic number, because the mean of its divisors is an integer number (222525).

2⁸⁶⁰⁴⁰¹ is an apocalyptic number.

It is an amenable number.

860401 is a deficient number, since it is larger than the sum of its proper divisors (29699).

860401 is a wasteful number, since it uses less digits than its factorization.

860401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29698.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 860401 is about 927.5780290628. The cubic root of 860401 is about 95.1116323914. Note that the first 3 decimals are identical.

Adding to 860401 its reverse (104068), we get a palindrome (964469).

The spelling of 860401 in words is "eight hundred sixty thousand, four hundred one".