86646975770 has 8 divisors (see below), whose sum is σ = 155964556404. Its totient is φ = 34658790304.

The previous prime is 86646975769. The next prime is 86646975781. The reversal of 86646975770 is 7757964668.

It can be written as a sum of positive squares in 2 ways, for example, as 84796857601 + 1850118169 = 291199^2 + 43013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86646975697 and 86646975706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4332348779 + ... + 4332348798.

Almost surely, 2^86646975770 is an apocalyptic number.

86646975770 is a deficient number, since it is larger than the sum of its proper divisors (69317580634).

86646975770 is a wasteful number, since it uses less digits than its factorization.

86646975770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8664697584.

The product of its (nonzero) digits is 106686720, while the sum is 65.

The spelling of 86646975770 in words is "eighty-six billion, six hundred forty-six million, nine hundred seventy-five thousand, seven hundred seventy".