87016481 has 4 divisors (see below), whose sum is σ = 87037764. Its totient is φ = 86995200.

The previous prime is 87016471. The next prime is 87016483. The reversal of 87016481 is 18461078.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39627025 + 47389456 = 6295^2 + 6884^2 .

It is a cyclic number.

It is not a de Polignac number, because 87016481 - 2⁶ = 87016417 is a prime.

It is a super-2 number, since 2×87016481² = 15143735931246722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87016483) 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, 2360 + ... + 13401.

It is an arithmetic number, because the mean of its divisors is an integer number (21759441).

Almost surely, 2^87016481 is an apocalyptic number.

It is an amenable number.

87016481 is a deficient number, since it is larger than the sum of its proper divisors (21283).

87016481 is a wasteful number, since it uses less digits than its factorization.

87016481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21282.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 87016481 is about 9328.2624855865. The cubic root of 87016481 is about 443.1327405161.

The spelling of 87016481 in words is "eighty-seven million, sixteen thousand, four hundred eighty-one".