85689965 has 8 divisors (see below), whose sum is σ = 105607320. Its totient is φ = 66699072.

The previous prime is 85689953. The next prime is 85689991. The reversal of 85689965 is 56998658.

It can be written as a sum of positive squares in 4 ways, for example, as 24631369 + 61058596 = 4963^2 + 7814^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 85689965 - 2⁴ = 85689949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85689965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231410 + ... + 231779.

It is an arithmetic number, because the mean of its divisors is an integer number (13200915).

Almost surely, 2^85689965 is an apocalyptic number.

It is an amenable number.

85689965 is a deficient number, since it is larger than the sum of its proper divisors (19917355).

85689965 is a wasteful number, since it uses less digits than its factorization.

85689965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463231.

The product of its digits is 4665600, while the sum is 56.

The square root of 85689965 is about 9256.8874358501. The cubic root of 85689965 is about 440.8694327432.

The spelling of 85689965 in words is "eighty-five million, six hundred eighty-nine thousand, nine hundred sixty-five".