86987536 has 10 divisors (see below), whose sum is σ = 168538382. Its totient is φ = 43493760.

The previous prime is 86987533. The next prime is 86987539. The reversal of 86987536 is 63578968.

86987536 = 904² + 905² + ... + 999².

It is an interprime number because it is at equal distance from previous prime (86987533) and next prime (86987539).

It can be written as a sum of positive squares in only one way, i.e., 72999936 + 13987600 = 8544^2 + 3740^2 .

It is not an unprimeable number, because it can be changed into a prime (86987533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2718345 + ... + 2718376.

Almost surely, 2^86987536 is an apocalyptic number.

It is an amenable number.

86987536 is a deficient number, since it is larger than the sum of its proper divisors (81550846).

86987536 is a wasteful number, since it uses less digits than its factorization.

86987536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436729 (or 5436723 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 86987536 is about 9326.7108886252. The cubic root of 86987536 is about 443.0836007842.

The spelling of 86987536 in words is "eighty-six million, nine hundred eighty-seven thousand, five hundred thirty-six".