84637313 has 2 divisors, whose sum is σ = 84637314. Its totient is φ = 84637312.

The previous prime is 84637303. The next prime is 84637327. The reversal of 84637313 is 31373648.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72471169 + 12166144 = 8513^2 + 3488^2 .

It is a cyclic number.

It is not a de Polignac number, because 84637313 - 2⁶ = 84637249 is a prime.

It is not a weakly prime, because it can be changed into another prime (84637303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42318656 + 42318657.

It is an arithmetic number, because the mean of its divisors is an integer number (42318657).

Almost surely, 2^84637313 is an apocalyptic number.

It is an amenable number.

84637313 is a deficient number, since it is larger than the sum of its proper divisors (1).

84637313 is an equidigital number, since it uses as much as digits as its factorization.

84637313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 84637313 is about 9199.8539662323. The cubic root of 84637313 is about 439.0567137014.

The spelling of 84637313 in words is "eighty-four million, six hundred thirty-seven thousand, three hundred thirteen".