260806157 has 2 divisors, whose sum is σ = 260806158. Its totient is φ = 260806156.

The previous prime is 260806127. The next prime is 260806199. The reversal of 260806157 is 751608062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188403076 + 72403081 = 13726^2 + 8509^2 .

It is a cyclic number.

It is not a de Polignac number, because 260806157 - 2⁶ = 260806093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260806127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130403078 + 130403079.

It is an arithmetic number, because the mean of its divisors is an integer number (130403079).

Almost surely, 2^260806157 is an apocalyptic number.

It is an amenable number.

260806157 is a deficient number, since it is larger than the sum of its proper divisors (1).

260806157 is an equidigital number, since it uses as much as digits as its factorization.

260806157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 260806157 is about 16149.4940168415. The cubic root of 260806157 is about 638.9094031954.

The spelling of 260806157 in words is "two hundred sixty million, eight hundred six thousand, one hundred fifty-seven".