408626 has 8 divisors (see below), whose sum is σ = 617004. Its totient is φ = 202960.

The previous prime is 408623. The next prime is 408631. The reversal of 408626 is 626804.

408626 = 179² + 180² + ... + 190².

It can be written as a sum of positive squares in 2 ways, for example, as 319225 + 89401 = 565^2 + 299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 408595 and 408604.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408626.

It is not an unprimeable number, because it can be changed into a prime (408623) 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, 245 + ... + 936.

2⁴⁰⁸⁶²⁶ is an apocalyptic number.

408626 is a deficient number, since it is larger than the sum of its proper divisors (208378).

408626 is a wasteful number, since it uses less digits than its factorization.

408626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 408626 is about 639.2386095974. The cubic root of 408626 is about 74.2065086330.

The spelling of 408626 in words is "four hundred eight thousand, six hundred twenty-six".