406613 has 4 divisors (see below), whose sum is σ = 411840. Its totient is φ = 401388.

The previous prime is 406591. The next prime is 406631. The reversal of 406613 is 316604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406613 - 2¹² = 402517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406633) 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, 2495 + ... + 2652.

It is an arithmetic number, because the mean of its divisors is an integer number (102960).

2⁴⁰⁶⁶¹³ is an apocalyptic number.

It is an amenable number.

406613 is a deficient number, since it is larger than the sum of its proper divisors (5227).

406613 is an equidigital number, since it uses as much as digits as its factorization.

406613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5226.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 406613 is about 637.6621362446. The cubic root of 406613 is about 74.0844543447.

Subtracting from 406613 its reverse (316604), we obtain a palindrome (90009).

The spelling of 406613 in words is "four hundred six thousand, six hundred thirteen".