83217427 has 8 divisors (see below), whose sum is σ = 88856064. Its totient is φ = 77747208.

The previous prime is 83217391. The next prime is 83217437. The reversal of 83217427 is 72471238.

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 83217427 - 2¹⁹ = 82693139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83217392 and 83217401.

It is not an unprimeable number, because it can be changed into a prime (83217437) 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, 41083 + ... + 43060.

It is an arithmetic number, because the mean of its divisors is an integer number (11107008).

Almost surely, 2^83217427 is an apocalyptic number.

83217427 is a deficient number, since it is larger than the sum of its proper divisors (5638637).

83217427 is a wasteful number, since it uses less digits than its factorization.

83217427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84209.

The product of its digits is 18816, while the sum is 34.

The square root of 83217427 is about 9122.3586314067. The cubic root of 83217427 is about 436.5876313911.

The spelling of 83217427 in words is "eighty-three million, two hundred seventeen thousand, four hundred twenty-seven".