1216006 has 16 divisors (see below), whose sum is σ = 2055168. Its totient is φ = 534600.

The previous prime is 1215923. The next prime is 1216009. The reversal of 1216006 is 6006121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216009) 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, 210 + ... + 1573.

It is an arithmetic number, because the mean of its divisors is an integer number (128448).

2^1216006 is an apocalyptic number.

1216006 is a deficient number, since it is larger than the sum of its proper divisors (839162).

1216006 is a wasteful number, since it uses less digits than its factorization.

1216006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1216006 is about 1102.7266206998. The cubic root of 1216006 is about 106.7362415013.

The spelling of 1216006 in words is "one million, two hundred sixteen thousand, six".