86757985 has 4 divisors (see below), whose sum is σ = 104109588. Its totient is φ = 69406384.

The previous prime is 86757977. The next prime is 86757997. The reversal of 86757985 is 58975768.

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 21455424 + 65302561 = 4632^2 + 8081^2 .

It is a cyclic number.

It is not a de Polignac number, because 86757985 - 2³ = 86757977 is a prime.

It is a super-2 number, since 2×86757985² = 15053895922520450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8675794 + ... + 8675803.

It is an arithmetic number, because the mean of its divisors is an integer number (26027397).

Almost surely, 2^86757985 is an apocalyptic number.

It is an amenable number.

86757985 is a deficient number, since it is larger than the sum of its proper divisors (17351603).

86757985 is a wasteful number, since it uses less digits than its factorization.

86757985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17351602.

The product of its digits is 4233600, while the sum is 55.

The square root of 86757985 is about 9314.3966524945. The cubic root of 86757985 is about 442.6935070332.

The spelling of 86757985 in words is "eighty-six million, seven hundred fifty-seven thousand, nine hundred eighty-five".