86750513 has 4 divisors (see below), whose sum is σ = 89741940. Its totient is φ = 83759088.

The previous prime is 86750509. The next prime is 86750539. The reversal of 86750513 is 31505768.

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 70694464 + 16056049 = 8408^2 + 4007^2 .

It is a cyclic number.

It is not a de Polignac number, because 86750513 - 2² = 86750509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86750413) 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, 1495670 + ... + 1495727.

It is an arithmetic number, because the mean of its divisors is an integer number (22435485).

Almost surely, 2^86750513 is an apocalyptic number.

It is an amenable number.

86750513 is a deficient number, since it is larger than the sum of its proper divisors (2991427).

86750513 is a wasteful number, since it uses less digits than its factorization.

86750513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991426.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 86750513 is about 9313.9955443408. The cubic root of 86750513 is about 442.6807977291.

The spelling of 86750513 in words is "eighty-six million, seven hundred fifty thousand, five hundred thirteen".