263140085 has 8 divisors (see below), whose sum is σ = 340058040. Its totient is φ = 194318784.

The previous prime is 263140019. The next prime is 263140099. The reversal of 263140085 is 580041362.

It can be written as a sum of positive squares in 4 ways, for example, as 34586161 + 228553924 = 5881^2 + 15118^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 263140085 - 2⁸ = 263139829 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2024090 + ... + 2024219.

It is an arithmetic number, because the mean of its divisors is an integer number (42507255).

Almost surely, 2^263140085 is an apocalyptic number.

It is an amenable number.

263140085 is a deficient number, since it is larger than the sum of its proper divisors (76917955).

263140085 is a wasteful number, since it uses less digits than its factorization.

263140085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048327.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 263140085 is about 16221.5931708325. The cubic root of 263140085 is about 640.8095914939.

The spelling of 263140085 in words is "two hundred sixty-three million, one hundred forty thousand, eighty-five".