1220599 has 2 divisors, whose sum is σ = 1220600. Its totient is φ = 1220598.

The previous prime is 1220591. The next prime is 1220623. The reversal of 1220599 is 9950221.

It is a weak prime.

It is an emirp because it is prime and its reverse (9950221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220599 - 2³ = 1220591 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610299 + 610300.

It is an arithmetic number, because the mean of its divisors is an integer number (610300).

2^1220599 is an apocalyptic number.

1220599 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220599 is an equidigital number, since it uses as much as digits as its factorization.

1220599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1220599 is about 1104.8072230032. The cubic root of 1220599 is about 106.8704578396.

The spelling of 1220599 in words is "one million, two hundred twenty thousand, five hundred ninety-nine".