85508077 has 4 divisors (see below), whose sum is σ = 85533120. Its totient is φ = 85483036.

The previous prime is 85508053. The next prime is 85508081. The reversal of 85508077 is 77080558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85508077 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85508677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6403 + ... + 14560.

It is an arithmetic number, because the mean of its divisors is an integer number (21383280).

Almost surely, 2^85508077 is an apocalyptic number.

It is an amenable number.

85508077 is a deficient number, since it is larger than the sum of its proper divisors (25043).

85508077 is a wasteful number, since it uses less digits than its factorization.

85508077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25042.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 85508077 is about 9247.0577482786. The cubic root of 85508077 is about 440.5572777028.

The spelling of 85508077 in words is "eighty-five million, five hundred eight thousand, seventy-seven".