87294871 has 4 divisors (see below), whose sum is σ = 87340792. Its totient is φ = 87248952.

The previous prime is 87294841. The next prime is 87294887. The reversal of 87294871 is 17849278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17849278 = 2 ⋅8924639.

It is a cyclic number.

It is not a de Polignac number, because 87294871 - 2⁷ = 87294743 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 (87294811) 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, 19980 + ... + 23953.

It is an arithmetic number, because the mean of its divisors is an integer number (21835198).

Almost surely, 2^87294871 is an apocalyptic number.

87294871 is a deficient number, since it is larger than the sum of its proper divisors (45921).

87294871 is a wasteful number, since it uses less digits than its factorization.

87294871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45920.

The product of its digits is 225792, while the sum is 46.

The square root of 87294871 is about 9343.1724269651. The cubic root of 87294871 is about 443.6048058736.

The spelling of 87294871 in words is "eighty-seven million, two hundred ninety-four thousand, eight hundred seventy-one".