1212616 has 16 divisors (see below), whose sum is σ = 2329740. Its totient is φ = 591360.

The previous prime is 1212613. The next prime is 1212641. The reversal of 1212616 is 6162121.

It can be written as a sum of positive squares in 2 ways, for example, as 910116 + 302500 = 954^2 + 550^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212593 and 1212602.

It is not an unprimeable number, because it can be changed into a prime (1212611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521 + ... + 2176.

2^1212616 is an apocalyptic number.

It is an amenable number.

1212616 is a deficient number, since it is larger than the sum of its proper divisors (1117124).

1212616 is a wasteful number, since it uses less digits than its factorization.

1212616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744 (or 3740 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1212616 is about 1101.1884489042. The cubic root of 1212616 is about 106.6369622148.

Adding to 1212616 its reverse (6162121), we get a palindrome (7374737).

The spelling of 1212616 in words is "one million, two hundred twelve thousand, six hundred sixteen".