862401 has 8 divisors (see below), whose sum is σ = 1157824. Its totient is φ = 570960.

The previous prime is 862399. The next prime is 862409. The reversal of 862401 is 104268.

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

It is not a de Polignac number, because 862401 - 2¹ = 862399 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 862401.

It is not an unprimeable number, because it can be changed into a prime (862409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445 + ... + 1386.

It is an arithmetic number, because the mean of its divisors is an integer number (144728).

2⁸⁶²⁴⁰¹ is an apocalyptic number.

It is an amenable number.

862401 is a deficient number, since it is larger than the sum of its proper divisors (295423).

862401 is a wasteful number, since it uses less digits than its factorization.

862401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 862401 is about 928.6554797125. The cubic root of 862401 is about 95.1852709482.

Adding to 862401 its reverse (104268), we get a palindrome (966669).

The spelling of 862401 in words is "eight hundred sixty-two thousand, four hundred one".