86974664729 has 4 divisors (see below), whose sum is σ = 87066507984. Its totient is φ = 86882821476.

The previous prime is 86974664723. The next prime is 86974664731. The reversal of 86974664729 is 92746647968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86974664729 - 2²⁰ = 86973616153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86974664723) 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, 45920207 + ... + 45922100.

It is an arithmetic number, because the mean of its divisors is an integer number (21766626996).

Almost surely, 2^86974664729 is an apocalyptic number.

It is an amenable number.

86974664729 is a deficient number, since it is larger than the sum of its proper divisors (91843255).

86974664729 is an equidigital number, since it uses as much as digits as its factorization.

86974664729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91843254.

The product of its digits is 219469824, while the sum is 68.

The spelling of 86974664729 in words is "eighty-six billion, nine hundred seventy-four million, six hundred sixty-four thousand, seven hundred twenty-nine".