1220807 has 16 divisors (see below), whose sum is σ = 1501440. Its totient is φ = 969408.

The previous prime is 1220803. The next prime is 1220819. The reversal of 1220807 is 7080221.

It is a cyclic number.

It is not a de Polignac number, because 1220807 - 2² = 1220803 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 (1220801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8843 + ... + 8979.

It is an arithmetic number, because the mean of its divisors is an integer number (93840).

2^1220807 is an apocalyptic number.

1220807 is a deficient number, since it is larger than the sum of its proper divisors (280633).

1220807 is a wasteful number, since it uses less digits than its factorization.

1220807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1220807 is about 1104.9013530628. The cubic root of 1220807 is about 106.8765280267.

The spelling of 1220807 in words is "one million, two hundred twenty thousand, eight hundred seven".