270778649 has 2 divisors, whose sum is σ = 270778650. Its totient is φ = 270778648.

The previous prime is 270778639. The next prime is 270778663. The reversal of 270778649 is 946877072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177076249 + 93702400 = 13307^2 + 9680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-270778649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 270778597 and 270778606.

It is not a weakly prime, because it can be changed into another prime (270778639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135389324 + 135389325.

It is an arithmetic number, because the mean of its divisors is an integer number (135389325).

Almost surely, 2^270778649 is an apocalyptic number.

It is an amenable number.

270778649 is a deficient number, since it is larger than the sum of its proper divisors (1).

270778649 is an equidigital number, since it uses as much as digits as its factorization.

270778649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The square root of 270778649 is about 16455.3532019219. The cubic root of 270778649 is about 646.9511249268.

The spelling of 270778649 in words is "two hundred seventy million, seven hundred seventy-eight thousand, six hundred forty-nine".