3686729220570 has 256 divisors, whose sum is σ = 10498137477120. Its totient is φ = 819031449600.

The previous prime is 3686729220557. The next prime is 3686729220649. The reversal of 3686729220570 is 750229276863.

3686729220570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3686729220570² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 3686729220570.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 23515882 + ... + 23672138.

It is an arithmetic number, because the mean of its divisors is an integer number (41008349520).

Almost surely, 2^{3686729220570} is an apocalyptic number.

3686729220570 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3686729220570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5249068738560).

3686729220570 is an abundant number, since it is smaller than the sum of its proper divisors (6811408256550).

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

3686729220570 is a wasteful number, since it uses less digits than its factorization.

3686729220570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156421.

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 3686729220570 in words is "three trillion, six hundred eighty-six billion, seven hundred twenty-nine million, two hundred twenty thousand, five hundred seventy".