1405656 has 48 divisors (see below), whose sum is σ = 4352400. Its totient is φ = 401472.

The previous prime is 1405643. The next prime is 1405669. The reversal of 1405656 is 6565041.

It is a happy number.

1405656 is a `hidden beast` number, since 1 + 4 + 0 + 5 + 656 = 666.

It is an interprime number because it is at equal distance from previous prime (1405643) and next prime (1405669).

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 891 + ... + 1898.

It is an arithmetic number, because the mean of its divisors is an integer number (90675).

2^1405656 is an apocalyptic number.

It is an amenable number.

1405656 is an abundant number, since it is smaller than the sum of its proper divisors (2946744).

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

1405656 is a wasteful number, since it uses less digits than its factorization.

1405656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1405656 is about 1185.6036437191. The cubic root of 1405656 is about 112.0193418976.

The spelling of 1405656 in words is "one million, four hundred five thousand, six hundred fifty-six".