85318477 has 4 divisors (see below), whose sum is σ = 89028000. Its totient is φ = 81608956.

The previous prime is 85318469. The next prime is 85318481. The reversal of 85318477 is 77481358.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77481358 = 2 ⋅38740679.

It is a cyclic number.

It is not a de Polignac number, because 85318477 - 2³ = 85318469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85318447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1854727 + ... + 1854772.

It is an arithmetic number, because the mean of its divisors is an integer number (22257000).

Almost surely, 2^85318477 is an apocalyptic number.

It is an amenable number.

85318477 is a deficient number, since it is larger than the sum of its proper divisors (3709523).

85318477 is a wasteful number, since it uses less digits than its factorization.

85318477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709522.

The product of its digits is 188160, while the sum is 43.

The square root of 85318477 is about 9236.8001494024. The cubic root of 85318477 is about 440.2314158011.

The spelling of 85318477 in words is "eighty-five million, three hundred eighteen thousand, four hundred seventy-seven".