1220673 has 8 divisors (see below), whose sum is σ = 1652128. Its totient is φ = 801504.

The previous prime is 1220669. The next prime is 1220689. The reversal of 1220673 is 3760221.

It is a happy number.

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

It is not a de Polignac number, because 1220673 - 2² = 1220669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1220623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2836 + ... + 3237.

It is an arithmetic number, because the mean of its divisors is an integer number (206516).

2^1220673 is an apocalyptic number.

It is an amenable number.

1220673 is a deficient number, since it is larger than the sum of its proper divisors (431455).

1220673 is an equidigital number, since it uses as much as digits as its factorization.

1220673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 1220673 is about 1104.8407125011. The cubic root of 1220673 is about 106.8726175044.

Adding to 1220673 its reverse (3760221), we get a palindrome (4980894).

The spelling of 1220673 in words is "one million, two hundred twenty thousand, six hundred seventy-three".