85658479 has 4 divisors (see below), whose sum is σ = 90166840. Its totient is φ = 81150120.

The previous prime is 85658473. The next prime is 85658491. The reversal of 85658479 is 97485658.

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

It is a cyclic number.

It is not a de Polignac number, because 85658479 - 2⁷ = 85658351 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 (85658473) 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, 2254152 + ... + 2254189.

It is an arithmetic number, because the mean of its divisors is an integer number (22541710).

Almost surely, 2^85658479 is an apocalyptic number.

85658479 is a deficient number, since it is larger than the sum of its proper divisors (4508361).

85658479 is a wasteful number, since it uses less digits than its factorization.

85658479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508360.

The product of its digits is 2419200, while the sum is 52.

The square root of 85658479 is about 9255.1865999557. The cubic root of 85658479 is about 440.8154283041.

The spelling of 85658479 in words is "eighty-five million, six hundred fifty-eight thousand, four hundred seventy-nine".