1216486 has 16 divisors (see below), whose sum is σ = 1986336. Its totient is φ = 556416.

The previous prime is 1216459. The next prime is 1216489. The reversal of 1216486 is 6846121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216489) 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, 775 + ... + 1741.

It is an arithmetic number, because the mean of its divisors is an integer number (124146).

2^1216486 is an apocalyptic number.

1216486 is a deficient number, since it is larger than the sum of its proper divisors (769850).

1216486 is a wasteful number, since it uses less digits than its factorization.

1216486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023.

The product of its digits is 2304, while the sum is 28.

The square root of 1216486 is about 1102.9442415644. The cubic root of 1216486 is about 106.7502838268.

The spelling of 1216486 in words is "one million, two hundred sixteen thousand, four hundred eighty-six".