1220759 has 4 divisors (see below), whose sum is σ = 1224360. Its totient is φ = 1217160.

The previous prime is 1220743. The next prime is 1220761. The reversal of 1220759 is 9570221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220759 - 2⁴ = 1220743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220729) 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, 1232 + ... + 1989.

It is an arithmetic number, because the mean of its divisors is an integer number (306090).

2^1220759 is an apocalyptic number.

1220759 is a deficient number, since it is larger than the sum of its proper divisors (3601).

1220759 is an equidigital number, since it uses as much as digits as its factorization.

1220759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1220759 is about 1104.8796314531. The cubic root of 1220759 is about 106.8751272755.

The spelling of 1220759 in words is "one million, two hundred twenty thousand, seven hundred fifty-nine".