652401 has 16 divisors (see below), whose sum is σ = 982720. Its totient is φ = 427680.

The previous prime is 652381. The next prime is 652411. The reversal of 652401 is 104256.

It is a happy number.

It is not a de Polignac number, because 652401 - 2⁵ = 652369 is a prime.

It is a Duffinian number.

It is a Curzon number.

652401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (652411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1806 + ... + 2136.

It is an arithmetic number, because the mean of its divisors is an integer number (61420).

2⁶⁵²⁴⁰¹ is an apocalyptic number.

It is an amenable number.

652401 is a deficient number, since it is larger than the sum of its proper divisors (330319).

652401 is a wasteful number, since it uses less digits than its factorization.

652401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 652401 is about 807.7134392840. The cubic root of 652401 is about 86.7304379425.

Adding to 652401 its reverse (104256), we get a palindrome (756657).

The spelling of 652401 in words is "six hundred fifty-two thousand, four hundred one".