85779071 has 8 divisors (see below), whose sum is σ = 101413920. Its totient is φ = 70989408.

The previous prime is 85779047. The next prime is 85779103. The reversal of 85779071 is 17097758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85779071 - 2⁶ = 85779007 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 (85779041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211076 + ... + 211481.

It is an arithmetic number, because the mean of its divisors is an integer number (12676740).

Almost surely, 2^85779071 is an apocalyptic number.

85779071 is a deficient number, since it is larger than the sum of its proper divisors (15634849).

85779071 is a wasteful number, since it uses less digits than its factorization.

85779071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422593.

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 85779071 is about 9261.6991421661. The cubic root of 85779071 is about 441.0221947101.

The spelling of 85779071 in words is "eighty-five million, seven hundred seventy-nine thousand, seventy-one".