1220699 has 2 divisors, whose sum is σ = 1220700. Its totient is φ = 1220698.

The previous prime is 1220689. The next prime is 1220711. The reversal of 1220699 is 9960221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220699 - 2¹² = 1216603 is a prime.

It is a Chen prime.

It is equal to p₉₄₃₉₄ and since 1220699 and 94394 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1220669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610349 + 610350.

It is an arithmetic number, because the mean of its divisors is an integer number (610350).

2^1220699 is an apocalyptic number.

1220699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220699 is an equidigital number, since it uses as much as digits as its factorization.

1220699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1220699 is about 1104.8524788405. The cubic root of 1220699 is about 106.8733762849.

The spelling of 1220699 in words is "one million, two hundred twenty thousand, six hundred ninety-nine".