1206245065 has 16 divisors (see below), whose sum is σ = 1469062800. Its totient is φ = 950648832.

The previous prime is 1206245009. The next prime is 1206245071. The reversal of 1206245065 is 5605426021.

It can be written as a sum of positive squares in 8 ways, for example, as 2704 + 1206242361 = 52^2 + 34731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206245065 - 2⁹ = 1206244553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447241 + ... + 449929.

It is an arithmetic number, because the mean of its divisors is an integer number (91816425).

Almost surely, 2^1206245065 is an apocalyptic number.

It is an amenable number.

1206245065 is a deficient number, since it is larger than the sum of its proper divisors (262817735).

1206245065 is a wasteful number, since it uses less digits than its factorization.

1206245065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1206245065 is about 34731.0389277372. The cubic root of 1206245065 is about 1064.4988171342.

The spelling of 1206245065 in words is "one billion, two hundred six million, two hundred forty-five thousand, sixty-five".