1406564 has 12 divisors (see below), whose sum is σ = 2495724. Its totient is φ = 693504.

The previous prime is 1406557. The next prime is 1406591. The reversal of 1406564 is 4656041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 422500 + 984064 = 650^2 + 992^2 .

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 3 ways as a sum of consecutive naturals, for example, 2117 + ... + 2700.

It is an arithmetic number, because the mean of its divisors is an integer number (207977).

2^1406564 is an apocalyptic number.

It is an amenable number.

1406564 is a deficient number, since it is larger than the sum of its proper divisors (1089160).

1406564 is a wasteful number, since it uses less digits than its factorization.

1406564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894 (or 4892 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1406564 is about 1185.9865091981. The cubic root of 1406564 is about 112.0434567757.

The spelling of 1406564 in words is "one million, four hundred six thousand, five hundred sixty-four".