84716531 has 2 divisors, whose sum is σ = 84716532. Its totient is φ = 84716530.

The previous prime is 84716473. The next prime is 84716549. The reversal of 84716531 is 13561748.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84716531 is a prime.

It is a super-2 number, since 2×84716531² = 14353781249347922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84716491 and 84716500.

It is not a weakly prime, because it can be changed into another prime (84716591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42358265 + 42358266.

It is an arithmetic number, because the mean of its divisors is an integer number (42358266).

Almost surely, 2^84716531 is an apocalyptic number.

84716531 is a deficient number, since it is larger than the sum of its proper divisors (1).

84716531 is an equidigital number, since it uses as much as digits as its factorization.

84716531 is an odious number, because the sum of its binary digits is odd.

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

The square root of 84716531 is about 9204.1583537008. The cubic root of 84716531 is about 439.1936523154.

The spelling of 84716531 in words is "eighty-four million, seven hundred sixteen thousand, five hundred thirty-one".