85663465 has 4 divisors (see below), whose sum is σ = 102796164. Its totient is φ = 68530768.

The previous prime is 85663463. The next prime is 85663471. The reversal of 85663465 is 56436658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56436658 = 2 ⋅28218329.

It can be written as a sum of positive squares in 2 ways, for example, as 39803481 + 45859984 = 6309^2 + 6772^2 .

It is a cyclic number.

It is not a de Polignac number, because 85663465 - 2¹ = 85663463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85663463) 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, 8566342 + ... + 8566351.

It is an arithmetic number, because the mean of its divisors is an integer number (25699041).

Almost surely, 2^85663465 is an apocalyptic number.

It is an amenable number.

85663465 is a deficient number, since it is larger than the sum of its proper divisors (17132699).

85663465 is a wasteful number, since it uses less digits than its factorization.

85663465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17132698.

The product of its digits is 518400, while the sum is 43.

The square root of 85663465 is about 9255.4559585144. The cubic root of 85663465 is about 440.8239811180.

The spelling of 85663465 in words is "eighty-five million, six hundred sixty-three thousand, four hundred sixty-five".