606401 has 4 divisors (see below), whose sum is σ = 616404. Its totient is φ = 596400.

The previous prime is 606383. The next prime is 606413. The reversal of 606401 is 104606.

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 5776 + 600625 = 76^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 606401 - 2¹⁸ = 344257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 606401.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 606401.

It is not an unprimeable number, because it can be changed into a prime (606301) 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, 4910 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (154101).

2⁶⁰⁶⁴⁰¹ is an apocalyptic number.

606401 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

606401 is a deficient number, since it is larger than the sum of its proper divisors (10003).

606401 is an equidigital number, since it uses as much as digits as its factorization.

606401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10002.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 606401 is about 778.7175354389. The cubic root of 606401 is about 84.6421402357.

The spelling of 606401 in words is "six hundred six thousand, four hundred one".