401654 has 8 divisors (see below), whose sum is σ = 657288. Its totient is φ = 182560.

The previous prime is 401651. The next prime is 401669. The reversal of 401654 is 456104.

It is a happy number.

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

It is a super-2 number, since 2×401654² = 322651871432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9107 + ... + 9150.

It is an arithmetic number, because the mean of its divisors is an integer number (82161).

2⁴⁰¹⁶⁵⁴ is an apocalyptic number.

401654 is a deficient number, since it is larger than the sum of its proper divisors (255634).

401654 is a wasteful number, since it uses less digits than its factorization.

401654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18270.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401654 is about 633.7617849003. The cubic root of 401654 is about 73.7820467831.

Adding to 401654 its reverse (456104), we get a palindrome (857758).

The spelling of 401654 in words is "four hundred one thousand, six hundred fifty-four".