406601 has 4 divisors (see below), whose sum is σ = 437892. Its totient is φ = 375312.

The previous prime is 406591. The next prime is 406631. The reversal of 406601 is 106604.

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 141376 + 265225 = 376^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 406601 - 2¹⁰ = 405577 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 406601.

It is not an unprimeable number, because it can be changed into a prime (406631) 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, 15626 + ... + 15651.

It is an arithmetic number, because the mean of its divisors is an integer number (109473).

2⁴⁰⁶⁶⁰¹ is an apocalyptic number.

It is an amenable number.

406601 is a deficient number, since it is larger than the sum of its proper divisors (31291).

406601 is a wasteful number, since it uses less digits than its factorization.

406601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31290.

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

The square root of 406601 is about 637.6527268035. The cubic root of 406601 is about 74.0837255418.

The spelling of 406601 in words is "four hundred six thousand, six hundred one".