401106656 has 24 divisors (see below), whose sum is σ = 816910920. Its totient is φ = 193637248.

The previous prime is 401106647. The next prime is 401106661. The reversal of 401106656 is 656601104.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215186 + ... + 217041.

It is an arithmetic number, because the mean of its divisors is an integer number (34037955).

Almost surely, 2^401106656 is an apocalyptic number.

It is an amenable number.

401106656 is an abundant number, since it is smaller than the sum of its proper divisors (415804264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401106656 is a wasteful number, since it uses less digits than its factorization.

401106656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432266 (or 432258 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 401106656 is about 20027.6472906829. The cubic root of 401106656 is about 737.4851666460.

The spelling of 401106656 in words is "four hundred one million, one hundred six thousand, six hundred fifty-six".