85644330686 has 8 divisors (see below), whose sum is σ = 128467756704. Its totient is φ = 42821745120.

The previous prime is 85644330683. The next prime is 85644330689. The reversal of 85644330686 is 68603344658.

It is an interprime number because it is at equal distance from previous prime (85644330683) and next prime (85644330689).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85644330683) 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, 224171 + ... + 470681.

It is an arithmetic number, because the mean of its divisors is an integer number (16058469588).

Almost surely, 2^85644330686 is an apocalyptic number.

85644330686 is a deficient number, since it is larger than the sum of its proper divisors (42823426018).

85644330686 is a wasteful number, since it uses less digits than its factorization.

85644330686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420226.

The product of its (nonzero) digits is 9953280, while the sum is 53.

The spelling of 85644330686 in words is "eighty-five billion, six hundred forty-four million, three hundred thirty thousand, six hundred eighty-six".