85663479 has 16 divisors (see below), whose sum is σ = 126005760. Its totient is φ = 51332160.

The previous prime is 85663471. The next prime is 85663483. The reversal of 85663479 is 97436658.

It is not a de Polignac number, because 85663479 - 2³ = 85663471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85663471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11647 + ... + 17520.

It is an arithmetic number, because the mean of its divisors is an integer number (7875360).

Almost surely, 2^85663479 is an apocalyptic number.

85663479 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

85663479 is a deficient number, since it is larger than the sum of its proper divisors (40342281).

85663479 is a wasteful number, since it uses less digits than its factorization.

85663479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29270.

The product of its digits is 1088640, while the sum is 48.

The square root of 85663479 is about 9255.4567148250. The cubic root of 85663479 is about 440.8240051326.

The spelling of 85663479 in words is "eighty-five million, six hundred sixty-three thousand, four hundred seventy-nine".