1211662 has 8 divisors (see below), whose sum is σ = 1822392. Its totient is φ = 604200.

The previous prime is 1211659. The next prime is 1211669. The reversal of 1211662 is 2661121.

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

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211669) 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, 612 + ... + 1672.

It is an arithmetic number, because the mean of its divisors is an integer number (227799).

2^1211662 is an apocalyptic number.

1211662 is a deficient number, since it is larger than the sum of its proper divisors (610730).

1211662 is a wasteful number, since it uses less digits than its factorization.

1211662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634.

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

The square root of 1211662 is about 1100.7551953091. The cubic root of 1211662 is about 106.6089900862.

Adding to 1211662 its reverse (2661121), we get a palindrome (3872783).

It can be divided in two parts, 121 and 1662, that multiplied together give a palindrome (201102).

The spelling of 1211662 in words is "one million, two hundred eleven thousand, six hundred sixty-two".