83507217 has 4 divisors (see below), whose sum is σ = 111342960. Its totient is φ = 55671476.

The previous prime is 83507197. The next prime is 83507251. The reversal of 83507217 is 71270538.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83507217 - 2⁸ = 83506961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83507257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13917867 + ... + 13917872.

It is an arithmetic number, because the mean of its divisors is an integer number (27835740).

Almost surely, 2^83507217 is an apocalyptic number.

It is an amenable number.

83507217 is a deficient number, since it is larger than the sum of its proper divisors (27835743).

83507217 is a wasteful number, since it uses less digits than its factorization.

83507217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27835742.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 83507217 is about 9138.2283293864. The cubic root of 83507217 is about 437.0938240561.

The spelling of 83507217 in words is "eighty-three million, five hundred seven thousand, two hundred seventeen".