83217715 has 16 divisors (see below), whose sum is σ = 114280128. Its totient is φ = 56987136.

The previous prime is 83217713. The next prime is 83217727. The reversal of 83217715 is 51771238.

It is a cyclic number.

It is not a de Polignac number, because 83217715 - 2¹ = 83217713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83217713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40759 + ... + 42751.

It is an arithmetic number, because the mean of its divisors is an integer number (7142508).

Almost surely, 2^83217715 is an apocalyptic number.

83217715 is a deficient number, since it is larger than the sum of its proper divisors (31062413).

83217715 is a wasteful number, since it uses less digits than its factorization.

83217715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198.

The product of its digits is 11760, while the sum is 34.

The square root of 83217715 is about 9122.3744167843. The cubic root of 83217715 is about 436.5881350400.

The spelling of 83217715 in words is "eighty-three million, two hundred seventeen thousand, seven hundred fifteen".