86906971 has 4 divisors (see below), whose sum is σ = 87750832. Its totient is φ = 86063112.

The previous prime is 86906959. The next prime is 86907001. The reversal of 86906971 is 17960968.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86906971 - 2⁷ = 86906843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86906371) 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 3 ways as a sum of consecutive naturals, for example, 421776 + ... + 421981.

It is an arithmetic number, because the mean of its divisors is an integer number (21937708).

Almost surely, 2^86906971 is an apocalyptic number.

86906971 is a deficient number, since it is larger than the sum of its proper divisors (843861).

86906971 is a wasteful number, since it uses less digits than its factorization.

86906971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843860.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 86906971 is about 9322.3908414097. The cubic root of 86906971 is about 442.9467687043.

The spelling of 86906971 in words is "eighty-six million, nine hundred six thousand, nine hundred seventy-one".