263683085 has 4 divisors (see below), whose sum is σ = 316419708. Its totient is φ = 210946464.

The previous prime is 263683061. The next prime is 263683087. The reversal of 263683085 is 580386362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 172633321 + 91049764 = 13139^2 + 9542^2 .

It is a cyclic number.

It is not a de Polignac number, because 263683085 - 2¹⁰ = 263682061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263683087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26368304 + ... + 26368313.

It is an arithmetic number, because the mean of its divisors is an integer number (79104927).

Almost surely, 2^263683085 is an apocalyptic number.

It is an amenable number.

263683085 is a deficient number, since it is larger than the sum of its proper divisors (52736623).

263683085 is an equidigital number, since it uses as much as digits as its factorization.

263683085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52736622.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 263683085 is about 16238.3214957704. The cubic root of 263683085 is about 641.2500673205.

The spelling of 263683085 in words is "two hundred sixty-three million, six hundred eighty-three thousand, eighty-five".