1248691 has 2 divisors, whose sum is σ = 1248692. Its totient is φ = 1248690.

The previous prime is 1248673. The next prime is 1248697. The reversal of 1248691 is 1968421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1248691 - 2⁷ = 1248563 is a prime.

1248691 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1248697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624345 + 624346.

It is an arithmetic number, because the mean of its divisors is an integer number (624346).

2^1248691 is an apocalyptic number.

1248691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248691 is an equidigital number, since it uses as much as digits as its factorization.

1248691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 1248691 is about 1117.4484328147. The cubic root of 1248691 is about 107.6841193015.

The spelling of 1248691 in words is "one million, two hundred forty-eight thousand, six hundred ninety-one".