1806554 has 8 divisors (see below), whose sum is σ = 2717280. Its totient is φ = 900796.

The previous prime is 1806551. The next prime is 1806557. The reversal of 1806554 is 4556081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1806551) and next prime (1806557).

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

It is not an unprimeable number, because it can be changed into a prime (1806551) by changing a digit.

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, 134 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (339660).

2^1806554 is an apocalyptic number.

1806554 is a deficient number, since it is larger than the sum of its proper divisors (910726).

1806554 is a wasteful number, since it uses less digits than its factorization.

1806554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1806554 is about 1344.0810987437. The cubic root of 1806554 is about 121.7915009038.

The spelling of 1806554 in words is "one million, eight hundred six thousand, five hundred fifty-four".