85632279 has 8 divisors (see below), whose sum is σ = 115353840. Its totient is φ = 56499456.

The previous prime is 85632277. The next prime is 85632377. The reversal of 85632279 is 97223658.

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

It is not a de Polignac number, because 85632279 - 2¹ = 85632277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85632279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85632271) 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 7 ways as a sum of consecutive naturals, for example, 146844 + ... + 147425.

It is an arithmetic number, because the mean of its divisors is an integer number (14419230).

Almost surely, 2^85632279 is an apocalyptic number.

85632279 is a deficient number, since it is larger than the sum of its proper divisors (29721561).

85632279 is a wasteful number, since it uses less digits than its factorization.

85632279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294369.

The product of its digits is 181440, while the sum is 42.

The square root of 85632279 is about 9253.7710691372. The cubic root of 85632279 is about 440.7704802652.

It can be divided in two parts, 85632 and 279, that multiplied together give a triangular number (23891328 = T₆₉₁₂).

The spelling of 85632279 in words is "eighty-five million, six hundred thirty-two thousand, two hundred seventy-nine".