84675057647 has 2 divisors, whose sum is σ = 84675057648. Its totient is φ = 84675057646.

The previous prime is 84675057581. The next prime is 84675057689. The reversal of 84675057647 is 74675057648.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84675057647 - 2⁸ = 84675057391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84675047647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42337528823 + 42337528824.

It is an arithmetic number, because the mean of its divisors is an integer number (42337528824).

Almost surely, 2^84675057647 is an apocalyptic number.

84675057647 is a deficient number, since it is larger than the sum of its proper divisors (1).

84675057647 is an equidigital number, since it uses as much as digits as its factorization.

84675057647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39513600, while the sum is 59.

Subtracting from 84675057647 its reverse (74675057648), we obtain a palindrome (9999999999).

The spelling of 84675057647 in words is "eighty-four billion, six hundred seventy-five million, fifty-seven thousand, six hundred forty-seven".