405675 has 24 divisors (see below), whose sum is σ = 746480. Its totient is φ = 216000.

The previous prime is 405667. The next prime is 405677. The reversal of 405675 is 576504.

It is not a de Polignac number, because 405675 - 2³ = 405667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (405677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 375 + ... + 975.

2⁴⁰⁵⁶⁷⁵ is an apocalyptic number.

405675 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405675 is a deficient number, since it is larger than the sum of its proper divisors (340805).

405675 is a wasteful number, since it uses less digits than its factorization.

405675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 405675 is about 636.9262123669. The cubic root of 405675 is about 74.0274429503.

The spelling of 405675 in words is "four hundred five thousand, six hundred seventy-five".