401683 has 4 divisors (see below), whose sum is σ = 403920. Its totient is φ = 399448.

The previous prime is 401671. The next prime is 401689. The reversal of 401683 is 386104.

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 401683 - 2⁵ = 401651 is a prime.

It is a super-2 number, since 2×401683² = 322698464978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (100980).

2⁴⁰¹⁶⁸³ is an apocalyptic number.

401683 is a deficient number, since it is larger than the sum of its proper divisors (2237).

401683 is a wasteful number, since it uses less digits than its factorization.

401683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 401683 is about 633.7846637463. The cubic root of 401683 is about 73.7838224639.

Adding to 401683 its reverse (386104), we get a palindrome (787787).

The spelling of 401683 in words is "four hundred one thousand, six hundred eighty-three".