87145816 has 16 divisors (see below), whose sum is σ = 163866600. Its totient is φ = 43448064.

The previous prime is 87145811. The next prime is 87145819. The reversal of 87145816 is 61854178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87145811) 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, 12606 + ... + 18253.

Almost surely, 2^87145816 is an apocalyptic number.

It is an amenable number.

87145816 is a deficient number, since it is larger than the sum of its proper divisors (76720784).

87145816 is a wasteful number, since it uses less digits than its factorization.

87145816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31218 (or 31214 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 87145816 is about 9335.1923386720. The cubic root of 87145816 is about 443.3521786450.

The spelling of 87145816 in words is "eighty-seven million, one hundred forty-five thousand, eight hundred sixteen".