263278073 has 2 divisors, whose sum is σ = 263278074. Its totient is φ = 263278072.

The previous prime is 263278063. The next prime is 263278087. The reversal of 263278073 is 370872362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228856384 + 34421689 = 15128^2 + 5867^2 .

It is a cyclic number.

It is not a de Polignac number, because 263278073 - 2¹⁴ = 263261689 is a prime.

It is not a weakly prime, because it can be changed into another prime (263278063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131639036 + 131639037.

It is an arithmetic number, because the mean of its divisors is an integer number (131639037).

Almost surely, 2^263278073 is an apocalyptic number.

It is an amenable number.

263278073 is a deficient number, since it is larger than the sum of its proper divisors (1).

263278073 is an equidigital number, since it uses as much as digits as its factorization.

263278073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 263278073 is about 16225.8458331145. The cubic root of 263278073 is about 640.9215832772.

The spelling of 263278073 in words is "two hundred sixty-three million, two hundred seventy-eight thousand, seventy-three".