1216970 has 8 divisors (see below), whose sum is σ = 2190564. Its totient is φ = 486784.

The previous prime is 1216961. The next prime is 1216973. The reversal of 1216970 is 796121.

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 361 = 1103^2 + 19^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1216973) 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, 60839 + ... + 60858.

2^1216970 is an apocalyptic number.

1216970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216970 is a deficient number, since it is larger than the sum of its proper divisors (973594).

1216970 is a wasteful number, since it uses less digits than its factorization.

1216970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121704.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1216970 is about 1103.1636324680. The cubic root of 1216970 is about 106.7644394320.

The spelling of 1216970 in words is "one million, two hundred sixteen thousand, nine hundred seventy".