1217006 has 8 divisors (see below), whose sum is σ = 2086320. Its totient is φ = 521568.

The previous prime is 1216997. The next prime is 1217009. The reversal of 1217006 is 6007121.

It is a happy number.

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

It is a super-2 number, since 2×1217006² = 2962207208072, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217009) 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, 43451 + ... + 43478.

It is an arithmetic number, because the mean of its divisors is an integer number (260790).

2^1217006 is an apocalyptic number.

1217006 is a deficient number, since it is larger than the sum of its proper divisors (869314).

1217006 is an equidigital number, since it uses as much as digits as its factorization.

1217006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86938.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1217006 is about 1103.1799490564. The cubic root of 1217006 is about 106.7654921783.

The spelling of 1217006 in words is "one million, two hundred seventeen thousand, six".