1216634 has 16 divisors (see below), whose sum is σ = 1924776. Its totient is φ = 576000.

The previous prime is 1216619. The next prime is 1216681. The reversal of 1216634 is 4366121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1203409 + 13225 = 1097^2 + 115^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834 + ... + 3234.

2^1216634 is an apocalyptic number.

1216634 is a deficient number, since it is larger than the sum of its proper divisors (708142).

1216634 is a wasteful number, since it uses less digits than its factorization.

1216634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its digits is 864, while the sum is 23.

The square root of 1216634 is about 1103.0113326707. The cubic root of 1216634 is about 106.7546127988.

The spelling of 1216634 in words is "one million, two hundred sixteen thousand, six hundred thirty-four".