84728461 has 2 divisors, whose sum is σ = 84728462. Its totient is φ = 84728460.

The previous prime is 84728437. The next prime is 84728471. The reversal of 84728461 is 16482748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78322500 + 6405961 = 8850^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 84728461 - 2²¹ = 82631309 is a prime.

It is a super-3 number, since 3×84728461³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84728471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42364230 + 42364231.

It is an arithmetic number, because the mean of its divisors is an integer number (42364231).

Almost surely, 2^84728461 is an apocalyptic number.

It is an amenable number.

84728461 is a deficient number, since it is larger than the sum of its proper divisors (1).

84728461 is an equidigital number, since it uses as much as digits as its factorization.

84728461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 40.

The square root of 84728461 is about 9204.8064075243. The cubic root of 84728461 is about 439.2142674747.

The spelling of 84728461 in words is "eighty-four million, seven hundred twenty-eight thousand, four hundred sixty-one".