1197216 has 36 divisors (see below), whose sum is σ = 3405402. Its totient is φ = 398976.

The previous prime is 1197211. The next prime is 1197221. The reversal of 1197216 is 6127911.

It is an interprime number because it is at equal distance from previous prime (1197211) and next prime (1197221).

It can be written as a sum of positive squares in only one way, i.e., 1040400 + 156816 = 1020^2 + 396^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1197216.

It is not an unprimeable number, because it can be changed into a prime (1197211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1791 + ... + 2366.

2^1197216 is an apocalyptic number.

1197216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1197216 is an abundant number, since it is smaller than the sum of its proper divisors (2208186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1197216 is a wasteful number, since it uses less digits than its factorization.

1197216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173 (or 4162 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 1197216 is about 1094.1736608053. The cubic root of 1197216 is about 106.1836143552.

The spelling of 1197216 in words is "one million, one hundred ninety-seven thousand, two hundred sixteen".