1806562 has 8 divisors (see below), whose sum is σ = 2783196. Its totient is φ = 878832.

The previous prime is 1806557. The next prime is 1806569. The reversal of 1806562 is 2656081.

It can be written as a sum of positive squares in 2 ways, for example, as 1798281 + 8281 = 1341^2 + 91^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1806562.

It is not an unprimeable number, because it can be changed into a prime (1806569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12133 + ... + 12280.

2^1806562 is an apocalyptic number.

1806562 is a deficient number, since it is larger than the sum of its proper divisors (976634).

1806562 is a wasteful number, since it uses less digits than its factorization.

1806562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24452.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1806562 is about 1344.0840747513. The cubic root of 1806562 is about 121.7916806808.

The spelling of 1806562 in words is "one million, eight hundred six thousand, five hundred sixty-two".