3453216660 has 144 divisors (see below), whose sum is σ = 10889214336. Its totient is φ = 885033216.

The previous prime is 3453216659. The next prime is 3453216661. The reversal of 3453216660 is 666123543.

It is an interprime number because it is at equal distance from previous prime (3453216659) and next prime (3453216661).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3453216661) 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 47 ways as a sum of consecutive naturals, for example, 549657 + ... + 555903.

It is an arithmetic number, because the mean of its divisors is an integer number (75619544).

Almost surely, 2^3453216660 is an apocalyptic number.

3453216660 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 3453216660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5444607168).

3453216660 is an abundant number, since it is smaller than the sum of its proper divisors (7435997676).

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

3453216660 is a wasteful number, since it uses less digits than its factorization.

3453216660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382 (or 6377 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 3453216660 is about 58764.0762711369. The cubic root of 3453216660 is about 1511.4992725485.

The spelling of 3453216660 in words is "three billion, four hundred fifty-three million, two hundred sixteen thousand, six hundred sixty".