85407771 has 4 divisors (see below), whose sum is σ = 113877032. Its totient is φ = 56938512.

The previous prime is 85407767. The next prime is 85407799. The reversal of 85407771 is 17770458.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85407771 - 2² = 85407767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85407701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14234626 + ... + 14234631.

It is an arithmetic number, because the mean of its divisors is an integer number (28469258).

Almost surely, 2^85407771 is an apocalyptic number.

85407771 is a deficient number, since it is larger than the sum of its proper divisors (28469261).

85407771 is a wasteful number, since it uses less digits than its factorization.

85407771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28469260.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 85407771 is about 9241.6324856597. The cubic root of 85407771 is about 440.3849437726.

The spelling of 85407771 in words is "eighty-five million, four hundred seven thousand, seven hundred seventy-one".