1247315066 has 12 divisors (see below), whose sum is σ = 1922910318. Its totient is φ = 606800592.

The previous prime is 1247315063. The next prime is 1247315077. The reversal of 1247315066 is 6605137421.

It can be written as a sum of positive squares in 3 ways, for example, as 1244325625 + 2989441 = 35275^2 + 1729^2 .

It is not an unprimeable number, because it can be changed into a prime (1247315063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225041 + ... + 230516.

Almost surely, 2^1247315066 is an apocalyptic number.

1247315066 is a deficient number, since it is larger than the sum of its proper divisors (675595252).

1247315066 is an equidigital number, since it uses as much as digits as its factorization.

1247315066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455633 (or 455596 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1247315066 is about 35317.3479468660. The cubic root of 1247315066 is about 1076.4455234812.

The spelling of 1247315066 in words is "one billion, two hundred forty-seven million, three hundred fifteen thousand, sixty-six".