87038863 has 4 divisors (see below), whose sum is σ = 88087608. Its totient is φ = 85990120.

The previous prime is 87038851. The next prime is 87038899. The reversal of 87038863 is 36883078.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87038863 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 (87038843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524248 + ... + 524413.

It is an arithmetic number, because the mean of its divisors is an integer number (22021902).

Almost surely, 2^87038863 is an apocalyptic number.

87038863 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

87038863 is a deficient number, since it is larger than the sum of its proper divisors (1048745).

87038863 is a wasteful number, since it uses less digits than its factorization.

87038863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048744.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 87038863 is about 9329.4620959624. The cubic root of 87038863 is about 443.1707308164.

The spelling of 87038863 in words is "eighty-seven million, thirty-eight thousand, eight hundred sixty-three".