85706647039 has 16 divisors (see below), whose sum is σ = 93733182144. Its totient is φ = 77894208000.

The previous prime is 85706647031. The next prime is 85706647051. The reversal of 85706647039 is 93074660758.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85706647039 - 2³ = 85706647031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85706647031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28629 + ... + 415009.

It is an arithmetic number, because the mean of its divisors is an integer number (5858323884).

Almost surely, 2^85706647039 is an apocalyptic number.

85706647039 is a deficient number, since it is larger than the sum of its proper divisors (8026535105).

85706647039 is a wasteful number, since it uses less digits than its factorization.

85706647039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386658.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 85706647039 in words is "eighty-five billion, seven hundred six million, six hundred forty-seven thousand, thirty-nine".