84772613 has 2 divisors, whose sum is σ = 84772614. Its totient is φ = 84772612.

The previous prime is 84772573. The next prime is 84772619. The reversal of 84772613 is 31627748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60497284 + 24275329 = 7778^2 + 4927^2 .

It is a cyclic number.

It is not a de Polignac number, because 84772613 - 2¹⁴ = 84756229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84772619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42386306 + 42386307.

It is an arithmetic number, because the mean of its divisors is an integer number (42386307).

Almost surely, 2^84772613 is an apocalyptic number.

It is an amenable number.

84772613 is a deficient number, since it is larger than the sum of its proper divisors (1).

84772613 is an equidigital number, since it uses as much as digits as its factorization.

84772613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 84772613 is about 9207.2044074192. The cubic root of 84772613 is about 439.2905457432.

The spelling of 84772613 in words is "eighty-four million, seven hundred seventy-two thousand, six hundred thirteen".