1320648071 has 2 divisors, whose sum is σ = 1320648072. Its totient is φ = 1320648070.

The previous prime is 1320648053. The next prime is 1320648103. The reversal of 1320648071 is 1708460231.

It is an a-pointer prime, because the next prime (1320648103) can be obtained adding 1320648071 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (1708460231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320648071 is a prime.

It is a super-2 number, since 2×1320648071² = 3488222654872042082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320648001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660324035 + 660324036.

It is an arithmetic number, because the mean of its divisors is an integer number (660324036).

Almost surely, 2^1320648071 is an apocalyptic number.

1320648071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320648071 is an equidigital number, since it uses as much as digits as its factorization.

1320648071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1320648071 is about 36340.7219383435. The cubic root of 1320648071 is about 1097.1408035426.

The spelling of 1320648071 in words is "one billion, three hundred twenty million, six hundred forty-eight thousand, seventy-one".