245565706 has 4 divisors (see below), whose sum is σ = 368348562. Its totient is φ = 122782852.

The previous prime is 245565703. The next prime is 245565721. The reversal of 245565706 is 607565542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 607565542 = 2 ⋅303782771.

It can be written as a sum of positive squares in only one way, i.e., 226773481 + 18792225 = 15059^2 + 4335^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (245565701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61391425 + ... + 61391428.

Almost surely, 2^245565706 is an apocalyptic number.

245565706 is a deficient number, since it is larger than the sum of its proper divisors (122782856).

245565706 is a wasteful number, since it uses less digits than its factorization.

245565706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122782855.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 245565706 is about 15670.5362384317. The cubic root of 245565706 is about 626.2137106447.

The spelling of 245565706 in words is "two hundred forty-five million, five hundred sixty-five thousand, seven hundred six".