86650930721 has 12 divisors (see below), whose sum is σ = 88132293756. Its totient is φ = 85194083520.

The previous prime is 86650930693. The next prime is 86650930727. The reversal of 86650930721 is 12703905668.

It can be written as a sum of positive squares in 6 ways, for example, as 30586162321 + 56064768400 = 174889^2 + 236780^2 .

It is not a de Polignac number, because 86650930721 - 2⁶ = 86650930657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86650930727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14125571 + ... + 14131703.

It is an arithmetic number, because the mean of its divisors is an integer number (7344357813).

Almost surely, 2^86650930721 is an apocalyptic number.

It is an amenable number.

86650930721 is a deficient number, since it is larger than the sum of its proper divisors (1481363035).

86650930721 is an equidigital number, since it uses as much as digits as its factorization.

86650930721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10052 (or 9991 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 86650930721 in words is "eighty-six billion, six hundred fifty million, nine hundred thirty thousand, seven hundred twenty-one".