1284769 has 2 divisors, whose sum is σ = 1284770. Its totient is φ = 1284768.

The previous prime is 1284763. The next prime is 1284791. The reversal of 1284769 is 9674821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 150544 = 1065^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284769 - 2⁵ = 1284737 is a prime.

It is a super-2 number, since 2×1284769² = 3301262766722, which contains 22 as substring.

1284769 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1284763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642384 + 642385.

It is an arithmetic number, because the mean of its divisors is an integer number (642385).

2^1284769 is an apocalyptic number.

It is an amenable number.

1284769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284769 is an equidigital number, since it uses as much as digits as its factorization.

1284769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 1284769 is about 1133.4765105638. The cubic root of 1284769 is about 108.7113818929.

The spelling of 1284769 in words is "one million, two hundred eighty-four thousand, seven hundred sixty-nine".