401166563 has 8 divisors (see below), whose sum is σ = 462928128. Its totient is φ = 340518024.

The previous prime is 401166539. The next prime is 401166581. The reversal of 401166563 is 365661104.

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

It is not a de Polignac number, because 401166563 - 2⁶ = 401166499 is a prime.

It is a super-2 number, since 2×401166563² = 321869222538465938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401166533) 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, 277481 + ... + 278922.

It is an arithmetic number, because the mean of its divisors is an integer number (57866016).

Almost surely, 2^401166563 is an apocalyptic number.

401166563 is a deficient number, since it is larger than the sum of its proper divisors (61761565).

401166563 is a wasteful number, since it uses less digits than its factorization.

401166563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556513.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 401166563 is about 20029.1428423685. The cubic root of 401166563 is about 737.5218803429.

The spelling of 401166563 in words is "four hundred one million, one hundred sixty-six thousand, five hundred sixty-three".