83686671 has 12 divisors (see below), whose sum is σ = 120989440. Its totient is φ = 55740960.

The previous prime is 83686657. The next prime is 83686723. The reversal of 83686671 is 17668638.

It is not a de Polignac number, because 83686671 - 2⁶ = 83686607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83686651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8370 + ... + 15408.

Almost surely, 2^83686671 is an apocalyptic number.

83686671 is a deficient number, since it is larger than the sum of its proper divisors (37302769).

83686671 is a wasteful number, since it uses less digits than its factorization.

83686671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8366 (or 8363 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 83686671 is about 9148.0419216355. The cubic root of 83686671 is about 437.4066996690.

The spelling of 83686671 in words is "eighty-three million, six hundred eighty-six thousand, six hundred seventy-one".