404670 has 64 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 88320.

The previous prime is 404597. The next prime is 404671. The reversal of 404670 is 76404.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8587 + ... + 8633.

It is an arithmetic number, because the mean of its divisors is an integer number (18144).

2⁴⁰⁴⁶⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580608).

404670 is an abundant number, since it is smaller than the sum of its proper divisors (756546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404670 is a wasteful number, since it uses less digits than its factorization.

404670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 404670 is about 636.1367777452. The cubic root of 404670 is about 73.9662617082.

The spelling of 404670 in words is "four hundred four thousand, six hundred seventy".