85347477 has 6 divisors (see below), whose sum is σ = 123279702. Its totient is φ = 56898312.

The previous prime is 85347469. The next prime is 85347491. The reversal of 85347477 is 77474358.

It can be written as a sum of positive squares in only one way, i.e., 42850116 + 42497361 = 6546^2 + 6519^2 .

It is not a de Polignac number, because 85347477 - 2³ = 85347469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85347407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4741518 + ... + 4741535.

It is an arithmetic number, because the mean of its divisors is an integer number (20546617).

Almost surely, 2^85347477 is an apocalyptic number.

It is an amenable number.

85347477 is a deficient number, since it is larger than the sum of its proper divisors (37932225).

85347477 is a wasteful number, since it uses less digits than its factorization.

85347477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9483059 (or 9483056 counting only the distinct ones).

The product of its digits is 658560, while the sum is 45.

The square root of 85347477 is about 9238.3698237297. The cubic root of 85347477 is about 440.2812887997.

The spelling of 85347477 in words is "eighty-five million, three hundred forty-seven thousand, four hundred seventy-seven".