83491671 has 8 divisors (see below), whose sum is σ = 112172544. Its totient is φ = 55235960.

The previous prime is 83491657. The next prime is 83491687. The reversal of 83491671 is 17619438.

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

It is a cyclic number.

It is not a de Polignac number, because 83491671 - 2⁹ = 83491159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83491631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105831 + ... + 106616.

It is an arithmetic number, because the mean of its divisors is an integer number (14021568).

Almost surely, 2^83491671 is an apocalyptic number.

83491671 is a deficient number, since it is larger than the sum of its proper divisors (28680873).

83491671 is a wasteful number, since it uses less digits than its factorization.

83491671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212581.

The product of its digits is 36288, while the sum is 39.

The square root of 83491671 is about 9137.3776872799. The cubic root of 83491671 is about 437.0666987267.

The spelling of 83491671 in words is "eighty-three million, four hundred ninety-one thousand, six hundred seventy-one".