401366 has 8 divisors (see below), whose sum is σ = 688080. Its totient is φ = 172008.

The previous prime is 401347. The next prime is 401371. The reversal of 401366 is 663104.

401366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×401366² = 322189331912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

401366 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14321 + ... + 14348.

It is an arithmetic number, because the mean of its divisors is an integer number (86010).

2⁴⁰¹³⁶⁶ is an apocalyptic number.

401366 is a deficient number, since it is larger than the sum of its proper divisors (286714).

401366 is a wasteful number, since it uses less digits than its factorization.

401366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28678.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 401366 is about 633.5345294457. The cubic root of 401366 is about 73.7644077951.

It can be divided in two parts, 401 and 366, that added together give a palindrome (767).

The spelling of 401366 in words is "four hundred one thousand, three hundred sixty-six".