400662 has 12 divisors (see below), whose sum is σ = 868140. Its totient is φ = 133548.

The previous prime is 400657. The next prime is 400679. The reversal of 400662 is 266004.

400662 is a `hidden beast` number, since 4 + 0 + 0 + 662 = 666.

400662 is nontrivially palindromic in base 16.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22259 = 400662 / (4 + 0 + 0 + 6 + 6 + 2).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400662.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11112 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (72345).

2⁴⁰⁰⁶⁶² is an apocalyptic number.

400662 is an abundant number, since it is smaller than the sum of its proper divisors (467478).

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

400662 is a wasteful number, since it uses less digits than its factorization.

400662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22267 (or 22264 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 400662 is about 632.9786726265. The cubic root of 400662 is about 73.7212547173.

Adding to 400662 its reverse (266004), we get a palindrome (666666).

The spelling of 400662 in words is "four hundred thousand, six hundred sixty-two".