83671845 has 8 divisors (see below), whose sum is σ = 133874976. Its totient is φ = 44624976.

The previous prime is 83671817. The next prime is 83671849. The reversal of 83671845 is 54817638.

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

It is not a de Polignac number, because 83671845 - 2⁵ = 83671813 is a prime.

It is a Curzon number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 83671797 and 83671806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83671849) 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, 2789047 + ... + 2789076.

It is an arithmetic number, because the mean of its divisors is an integer number (16734372).

Almost surely, 2^83671845 is an apocalyptic number.

It is an amenable number.

83671845 is a deficient number, since it is larger than the sum of its proper divisors (50203131).

83671845 is a wasteful number, since it uses less digits than its factorization.

83671845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578131.

The product of its digits is 161280, while the sum is 42.

The square root of 83671845 is about 9147.2315483976. The cubic root of 83671845 is about 437.3808676990.

The spelling of 83671845 in words is "eighty-three million, six hundred seventy-one thousand, eight hundred forty-five".