84615317 has 2 divisors, whose sum is σ = 84615318. Its totient is φ = 84615316.

The previous prime is 84615313. The next prime is 84615329. The reversal of 84615317 is 71351648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57668836 + 26946481 = 7594^2 + 5191^2 .

It is a cyclic number.

It is not a de Polignac number, because 84615317 - 2² = 84615313 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84615313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42307658 + 42307659.

It is an arithmetic number, because the mean of its divisors is an integer number (42307659).

Almost surely, 2^84615317 is an apocalyptic number.

It is an amenable number.

84615317 is a deficient number, since it is larger than the sum of its proper divisors (1).

84615317 is an equidigital number, since it uses as much as digits as its factorization.

84615317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 84615317 is about 9198.6584347936. The cubic root of 84615317 is about 439.0186755995.

The spelling of 84615317 in words is "eighty-four million, six hundred fifteen thousand, three hundred seventeen".