263513087 has 4 divisors (see below), whose sum is σ = 263610360. Its totient is φ = 263415816.

The previous prime is 263513017. The next prime is 263513101. The reversal of 263513087 is 780315362.

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

It is a cyclic number.

It is not a de Polignac number, because 263513087 - 2¹² = 263508991 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 (263513017) 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, 44453 + ... + 50030.

It is an arithmetic number, because the mean of its divisors is an integer number (65902590).

Almost surely, 2^263513087 is an apocalyptic number.

263513087 is a deficient number, since it is larger than the sum of its proper divisors (97273).

263513087 is an equidigital number, since it uses as much as digits as its factorization.

263513087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97272.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 263513087 is about 16233.0861822390. The cubic root of 263513087 is about 641.1122318275.

The spelling of 263513087 in words is "two hundred sixty-three million, five hundred thirteen thousand, eighty-seven".