3688709220 has 360 divisors, whose sum is σ = 13904352000. Its totient is φ = 815391360.

The previous prime is 3688709207. The next prime is 3688709237. The reversal of 3688709220 is 229078863.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2460031 + ... + 2461529.

It is an arithmetic number, because the mean of its divisors is an integer number (38623200).

Almost surely, 2^3688709220 is an apocalyptic number.

3688709220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3688709220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6952176000).

3688709220 is an abundant number, since it is smaller than the sum of its proper divisors (10215642780).

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

3688709220 is a wasteful number, since it uses less digits than its factorization.

3688709220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 3688709220 is about 60734.7447512542. The cubic root of 3688709220 is about 1545.1055069809.

The spelling of 3688709220 in words is "three billion, six hundred eighty-eight million, seven hundred nine thousand, two hundred twenty".