263902061 has 2 divisors, whose sum is σ = 263902062. Its totient is φ = 263902060.

The previous prime is 263902049. The next prime is 263902087. The reversal of 263902061 is 160209362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255808036 + 8094025 = 15994^2 + 2845^2 .

It is a cyclic number.

It is not a de Polignac number, because 263902061 - 2¹⁰ = 263901037 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 (263902021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131951030 + 131951031.

It is an arithmetic number, because the mean of its divisors is an integer number (131951031).

Almost surely, 2^263902061 is an apocalyptic number.

It is an amenable number.

263902061 is a deficient number, since it is larger than the sum of its proper divisors (1).

263902061 is an equidigital number, since it uses as much as digits as its factorization.

263902061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 263902061 is about 16245.0626653147. The cubic root of 263902061 is about 641.4275272215.

The spelling of 263902061 in words is "two hundred sixty-three million, nine hundred two thousand, sixty-one".