401606 has 8 divisors (see below), whose sum is σ = 606720. Its totient is φ = 199368.

The previous prime is 401593. The next prime is 401627. The reversal of 401606 is 606104.

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

It is a super-2 number, since 2×401606² = 322574758472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 326 + ... + 953.

It is an arithmetic number, because the mean of its divisors is an integer number (75840).

2⁴⁰¹⁶⁰⁶ is an apocalyptic number.

401606 is a deficient number, since it is larger than the sum of its proper divisors (205114).

401606 is a wasteful number, since it uses less digits than its factorization.

401606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 401606 is about 633.7239146505. The cubic root of 401606 is about 73.7791075375.

The spelling of 401606 in words is "four hundred one thousand, six hundred six".