86871667601 has 4 divisors (see below), whose sum is σ = 88990488804. Its totient is φ = 84752846400.

The previous prime is 86871667583. The next prime is 86871667609. The reversal of 86871667601 is 10676617868.

It is a Cunningham number, because it is equal to 294740²+1.

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 4186090000 + 82685577601 = 64700^2 + 287551^2 .

It is a cyclic number.

It is not a de Polignac number, because 86871667601 - 2⁶ = 86871667537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86871667609) by changing a digit.

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, 1059410540 + ... + 1059410621.

It is an arithmetic number, because the mean of its divisors is an integer number (22247622201).

Almost surely, 2^86871667601 is an apocalyptic number.

It is an amenable number.

86871667601 is a deficient number, since it is larger than the sum of its proper divisors (2118821203).

86871667601 is a wasteful number, since it uses less digits than its factorization.

86871667601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118821202.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 86871667601 in words is "eighty-six billion, eight hundred seventy-one million, six hundred sixty-seven thousand, six hundred one".