85508677 has 2 divisors, whose sum is σ = 85508678. Its totient is φ = 85508676.

The previous prime is 85508671. The next prime is 85508693. The reversal of 85508677 is 77680558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74545956 + 10962721 = 8634^2 + 3311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85508677 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 (85508671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42754338 + 42754339.

It is an arithmetic number, because the mean of its divisors is an integer number (42754339).

Almost surely, 2^85508677 is an apocalyptic number.

It is an amenable number.

85508677 is a deficient number, since it is larger than the sum of its proper divisors (1).

85508677 is an equidigital number, since it uses as much as digits as its factorization.

85508677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 85508677 is about 9247.0901909736. The cubic root of 85508677 is about 440.5583081464.

The spelling of 85508677 in words is "eighty-five million, five hundred eight thousand, six hundred seventy-seven".