1306680145 has 16 divisors (see below), whose sum is σ = 1603330560. Its totient is φ = 1022059584.

The previous prime is 1306680091. The next prime is 1306680149. The reversal of 1306680145 is 5410866031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1306680145 - 2⁷ = 1306680017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1306680145.

It is not an unprimeable number, because it can be changed into a prime (1306680149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24627 + ... + 56743.

It is an arithmetic number, because the mean of its divisors is an integer number (100208160).

Almost surely, 2^1306680145 is an apocalyptic number.

It is an amenable number.

1306680145 is a deficient number, since it is larger than the sum of its proper divisors (296650415).

1306680145 is a wasteful number, since it uses less digits than its factorization.

1306680145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32304.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1306680145 is about 36148.0309975523. The cubic root of 1306680145 is about 1093.2590908486.

The spelling of 1306680145 in words is "one billion, three hundred six million, six hundred eighty thousand, one hundred forty-five".