86519771 has 4 divisors (see below), whose sum is σ = 93175152. Its totient is φ = 79864392.

The previous prime is 86519743. The next prime is 86519779. The reversal of 86519771 is 17791568.

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 86519771 - 2²⁶ = 19410907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86519779) 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, 3327671 + ... + 3327696.

It is an arithmetic number, because the mean of its divisors is an integer number (23293788).

Almost surely, 2^86519771 is an apocalyptic number.

86519771 is a deficient number, since it is larger than the sum of its proper divisors (6655381).

86519771 is a wasteful number, since it uses less digits than its factorization.

86519771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6655380.

The product of its digits is 105840, while the sum is 44.

The square root of 86519771 is about 9301.6004536854. The cubic root of 86519771 is about 442.2879633579.

The spelling of 86519771 in words is "eighty-six million, five hundred nineteen thousand, seven hundred seventy-one".