406580689 has 4 divisors (see below), whose sum is σ = 411727360. Its totient is φ = 401434020.

The previous prime is 406580659. The next prime is 406580731. The reversal of 406580689 is 986085604.

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 406580689 - 2²¹ = 404483537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406580659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2573217 + ... + 2573374.

It is an arithmetic number, because the mean of its divisors is an integer number (102931840).

Almost surely, 2^406580689 is an apocalyptic number.

It is an amenable number.

406580689 is a deficient number, since it is larger than the sum of its proper divisors (5146671).

406580689 is an equidigital number, since it uses as much as digits as its factorization.

406580689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146670.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 406580689 is about 20163.8460864985. The cubic root of 406580689 is about 740.8249194948.

The spelling of 406580689 in words is "four hundred six million, five hundred eighty thousand, six hundred eighty-nine".