3669840720 has 480 divisors, whose sum is σ = 15382348800. Its totient is φ = 763416576.

The previous prime is 3669840697. The next prime is 3669840737. The reversal of 3669840720 is 270489663.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5175726 + ... + 5176434.

It is an arithmetic number, because the mean of its divisors is an integer number (32046560).

Almost surely, 2^3669840720 is an apocalyptic number.

3669840720 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 3669840720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7691174400).

3669840720 is an abundant number, since it is smaller than the sum of its proper divisors (11712508080).

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

3669840720 is a wasteful number, since it uses less digits than its factorization.

3669840720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 3669840720 is about 60579.2102952820. The cubic root of 3669840720 is about 1542.4664922187.

The spelling of 3669840720 in words is "three billion, six hundred sixty-nine million, eight hundred forty thousand, seven hundred twenty".