86722071 has 8 divisors (see below), whose sum is σ = 116135280. Its totient is φ = 57561792.

The previous prime is 86722067. The next prime is 86722073. The reversal of 86722071 is 17022768.

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

It is not a de Polignac number, because 86722071 - 2² = 86722067 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86722073) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 62430 + ... + 63803.

It is an arithmetic number, because the mean of its divisors is an integer number (14516910).

Almost surely, 2^86722071 is an apocalyptic number.

86722071 is a deficient number, since it is larger than the sum of its proper divisors (29413209).

86722071 is a wasteful number, since it uses less digits than its factorization.

86722071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126465.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 86722071 is about 9312.4685771282. The cubic root of 86722071 is about 442.6324133716.

The spelling of 86722071 in words is "eighty-six million, seven hundred twenty-two thousand, seventy-one".