3554666720 has 96 divisors (see below), whose sum is σ = 9252514656. Its totient is φ = 1279744000.

The previous prime is 3554666719. The next prime is 3554666723. The reversal of 3554666720 is 276664553.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3554666723) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 167762 + ... + 187758.

It is an arithmetic number, because the mean of its divisors is an integer number (96380361).

Almost surely, 2^3554666720 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 3554666720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4626257328).

3554666720 is an abundant number, since it is smaller than the sum of its proper divisors (5697847936).

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

3554666720 is a wasteful number, since it uses less digits than its factorization.

3554666720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20124 (or 20116 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The square root of 3554666720 is about 59621.0258214332. The cubic root of 3554666720 is about 1526.1584632984.

The spelling of 3554666720 in words is "three billion, five hundred fifty-four million, six hundred sixty-six thousand, seven hundred twenty".