84240617 has 2 divisors, whose sum is σ = 84240618. Its totient is φ = 84240616.

The previous prime is 84240599. The next prime is 84240619. The reversal of 84240617 is 71604248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48288601 + 35952016 = 6949^2 + 5996^2 .

It is a cyclic number.

It is not a de Polignac number, because 84240617 - 2⁶ = 84240553 is a prime.

Together with 84240619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84240619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42120308 + 42120309.

It is an arithmetic number, because the mean of its divisors is an integer number (42120309).

Almost surely, 2^84240617 is an apocalyptic number.

It is an amenable number.

84240617 is a deficient number, since it is larger than the sum of its proper divisors (1).

84240617 is an equidigital number, since it uses as much as digits as its factorization.

84240617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 84240617 is about 9178.2687365320. The cubic root of 84240617 is about 438.3696846906.

The spelling of 84240617 in words is "eighty-four million, two hundred forty thousand, six hundred seventeen".