83660071 has 8 divisors (see below), whose sum is σ = 93732624. Its totient is φ = 73998720.

The previous prime is 83660051. The next prime is 83660113. The reversal of 83660071 is 17006638.

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 83660071 - 2⁷ = 83659943 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 (83660051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102370 + ... + 103183.

It is an arithmetic number, because the mean of its divisors is an integer number (11716578).

Almost surely, 2^83660071 is an apocalyptic number.

83660071 is a deficient number, since it is larger than the sum of its proper divisors (10072553).

83660071 is a wasteful number, since it uses less digits than its factorization.

83660071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205601.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 83660071 is about 9146.5879430529. The cubic root of 83660071 is about 437.3603511843.

The spelling of 83660071 in words is "eighty-three million, six hundred sixty thousand, seventy-one".