263880085 has 8 divisors (see below), whose sum is σ = 361892736. Its totient is φ = 180946320.

The previous prime is 263880053. The next prime is 263880119. The reversal of 263880085 is 580088362.

263880085 = 1533² + 1534² + ... + 1637².

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

It is not a de Polignac number, because 263880085 - 2⁵ = 263880053 is a prime.

It is a Duffinian number.

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, 3769681 + ... + 3769750.

It is an arithmetic number, because the mean of its divisors is an integer number (45236592).

Almost surely, 2^263880085 is an apocalyptic number.

It is an amenable number.

263880085 is a deficient number, since it is larger than the sum of its proper divisors (98012651).

263880085 is an equidigital number, since it uses as much as digits as its factorization.

263880085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7539443.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 263880085 is about 16244.3862611057. The cubic root of 263880085 is about 641.4097221279.

The spelling of 263880085 in words is "two hundred sixty-three million, eight hundred eighty thousand, eighty-five".