87101863 has 4 divisors (see below), whose sum is σ = 92225520. Its totient is φ = 81978208.

The previous prime is 87101849. The next prime is 87101899. The reversal of 87101863 is 36810178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36810178 = 2 ⋅18405089.

It is a cyclic number.

It is not a de Polignac number, because 87101863 - 2¹⁷ = 86970791 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 (87101803) 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, 2561803 + ... + 2561836.

It is an arithmetic number, because the mean of its divisors is an integer number (23056380).

Almost surely, 2^87101863 is an apocalyptic number.

87101863 is a deficient number, since it is larger than the sum of its proper divisors (5123657).

87101863 is a wasteful number, since it uses less digits than its factorization.

87101863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123656.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 87101863 is about 9332.8378856594. The cubic root of 87101863 is about 443.2776295111.

The spelling of 87101863 in words is "eighty-seven million, one hundred one thousand, eight hundred sixty-three".