405627 has 4 divisors (see below), whose sum is σ = 540840. Its totient is φ = 270416.

The previous prime is 405611. The next prime is 405641. The reversal of 405627 is 726504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 405627 - 2⁴ = 405611 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 405597 and 405606.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 405627.

It is not an unprimeable number, because it can be changed into a prime (405607) 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, 67602 + ... + 67607.

It is an arithmetic number, because the mean of its divisors is an integer number (135210).

2⁴⁰⁵⁶²⁷ is an apocalyptic number.

405627 is a deficient number, since it is larger than the sum of its proper divisors (135213).

405627 is a wasteful number, since it uses less digits than its factorization.

405627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135212.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 405627 is about 636.8885302783. Note that the first 3 decimals coincide. The cubic root of 405627 is about 74.0245231603.

The spelling of 405627 in words is "four hundred five thousand, six hundred twenty-seven".