87534899 has 4 divisors (see below), whose sum is σ = 87560664. Its totient is φ = 87509136.

The previous prime is 87534893. The next prime is 87534901. The reversal of 87534899 is 99843578.

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 87534899 - 2⁴ = 87534883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87534899.

It is not an unprimeable number, because it can be changed into a prime (87534893) 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, 6842 + ... + 14895.

It is an arithmetic number, because the mean of its divisors is an integer number (21890166).

Almost surely, 2^87534899 is an apocalyptic number.

87534899 is a deficient number, since it is larger than the sum of its proper divisors (25765).

87534899 is a wasteful number, since it uses less digits than its factorization.

87534899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25764.

The product of its digits is 2177280, while the sum is 53.

The square root of 87534899 is about 9356.0087109835. The cubic root of 87534899 is about 444.0110158103.

The spelling of 87534899 in words is "eighty-seven million, five hundred thirty-four thousand, eight hundred ninety-nine".