87398263 has 4 divisors (see below), whose sum is σ = 87442888. Its totient is φ = 87353640.

The previous prime is 87398243. The next prime is 87398273. The reversal of 87398263 is 36289378.

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 87398263 - 2¹³ = 87390071 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 (87398243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19233 + ... + 23338.

It is an arithmetic number, because the mean of its divisors is an integer number (21860722).

Almost surely, 2^87398263 is an apocalyptic number.

87398263 is a deficient number, since it is larger than the sum of its proper divisors (44625).

87398263 is a wasteful number, since it uses less digits than its factorization.

87398263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44624.

The product of its digits is 435456, while the sum is 46.

The square root of 87398263 is about 9348.7038138985. The cubic root of 87398263 is about 443.7798718765.

The spelling of 87398263 in words is "eighty-seven million, three hundred ninety-eight thousand, two hundred sixty-three".