1306645071 has 16 divisors (see below), whose sum is σ = 1827883008. Its totient is φ = 829173600.

The previous prime is 1306645057. The next prime is 1306645099. The reversal of 1306645071 is 1705466031.

It is not a de Polignac number, because 1306645071 - 2¹⁵ = 1306612303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306645051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109491 + ... + 120836.

It is an arithmetic number, because the mean of its divisors is an integer number (114242688).

Almost surely, 2^1306645071 is an apocalyptic number.

1306645071 is a deficient number, since it is larger than the sum of its proper divisors (521237937).

1306645071 is a wasteful number, since it uses less digits than its factorization.

1306645071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230422.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 1306645071 is about 36147.5458503064. The cubic root of 1306645071 is about 1093.2493089821.

The spelling of 1306645071 in words is "one billion, three hundred six million, six hundred forty-five thousand, seventy-one".