400683 has 8 divisors (see below), whose sum is σ = 557568. Its totient is φ = 255464.

The previous prime is 400681. The next prime is 400703. The reversal of 400683 is 386004.

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

It is a cyclic number.

It is not a de Polignac number, because 400683 - 2¹ = 400681 is a prime.

400683 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (400681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2835 + ... + 2972.

It is an arithmetic number, because the mean of its divisors is an integer number (69696).

2⁴⁰⁰⁶⁸³ is an apocalyptic number.

400683 is a deficient number, since it is larger than the sum of its proper divisors (156885).

400683 is a wasteful number, since it uses less digits than its factorization.

400683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 400683 is about 632.9952606458. The cubic root of 400683 is about 73.7225426851.

Adding to 400683 its reverse (386004), we get a palindrome (786687).

The spelling of 400683 in words is "four hundred thousand, six hundred eighty-three".