85663474 has 8 divisors (see below), whose sum is σ = 138379500. Its totient is φ = 39536976.

The previous prime is 85663471. The next prime is 85663483. The reversal of 85663474 is 47436658.

It can be written as a sum of positive squares in 2 ways, for example, as 59397849 + 26265625 = 7707^2 + 5125^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 85663474.

It is not an unprimeable number, because it can be changed into a prime (85663471) 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, 1647349 + ... + 1647400.

Almost surely, 2^85663474 is an apocalyptic number.

85663474 is a deficient number, since it is larger than the sum of its proper divisors (52716026).

85663474 is a wasteful number, since it uses less digits than its factorization.

85663474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294764.

The product of its digits is 483840, while the sum is 43.

The square root of 85663474 is about 9255.4564447141. The cubic root of 85663474 is about 440.8239965560.

The spelling of 85663474 in words is "eighty-five million, six hundred sixty-three thousand, four hundred seventy-four".