85180847 has 2 divisors, whose sum is σ = 85180848. Its totient is φ = 85180846.

The previous prime is 85180813. The next prime is 85180867. The reversal of 85180847 is 74808158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85180847 - 2⁶ = 85180783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85180867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42590423 + 42590424.

It is an arithmetic number, because the mean of its divisors is an integer number (42590424).

Almost surely, 2^85180847 is an apocalyptic number.

85180847 is a deficient number, since it is larger than the sum of its proper divisors (1).

85180847 is an equidigital number, since it uses as much as digits as its factorization.

85180847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 85180847 is about 9229.3470516608. The cubic root of 85180847 is about 439.9945712140.

The spelling of 85180847 in words is "eighty-five million, one hundred eighty thousand, eight hundred forty-seven".