1006555 has 8 divisors (see below), whose sum is σ = 1317744. Its totient is φ = 732000.

The previous prime is 1006547. The next prime is 1006559. The reversal of 1006555 is 5556001.

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

It is not a de Polignac number, because 1006555 - 2³ = 1006547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9096 + ... + 9205.

It is an arithmetic number, because the mean of its divisors is an integer number (164718).

2^1006555 is an apocalyptic number.

1006555 is a deficient number, since it is larger than the sum of its proper divisors (311189).

1006555 is a wasteful number, since it uses less digits than its factorization.

1006555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18317.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1006555 is about 1003.2721465285. The cubic root of 1006555 is about 100.2180243086.

The spelling of 1006555 in words is "one million, six thousand, five hundred fifty-five".