85660704 has 72 divisors (see below), whose sum is σ = 244690992. Its totient is φ = 28425600.

The previous prime is 85660703. The next prime is 85660709. The reversal of 85660704 is 40706658.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (85660703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80979 + ... + 82029.

It is an arithmetic number, because the mean of its divisors is an integer number (3398486).

Almost surely, 2^85660704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85660704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122345496).

85660704 is an abundant number, since it is smaller than the sum of its proper divisors (159030288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85660704 is a wasteful number, since it uses less digits than its factorization.

85660704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 85660704 is about 9255.3068020461. The cubic root of 85660704 is about 440.8192450340.

The spelling of 85660704 in words is "eighty-five million, six hundred sixty thousand, seven hundred four".