3621115680 has 432 divisors, whose sum is σ = 14383764864. Its totient is φ = 763176960.

The previous prime is 3621115679. The next prime is 3621115681. The reversal of 3621115680 is 865111263.

It is an interprime number because it is at equal distance from previous prime (3621115679) and next prime (3621115681).

It is a super-2 number, since 2×3621115680² = 26224957535883724800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3621115681) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3974425 + ... + 3975335.

It is an arithmetic number, because the mean of its divisors is an integer number (33295752).

Almost surely, 2^3621115680 is an apocalyptic number.

3621115680 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 3621115680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7191882432).

3621115680 is an abundant number, since it is smaller than the sum of its proper divisors (10762649184).

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

3621115680 is a wasteful number, since it uses less digits than its factorization.

3621115680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 3621115680 is about 60175.7067262197. The cubic root of 3621115680 is about 1535.6095334519.

The spelling of 3621115680 in words is "three billion, six hundred twenty-one million, one hundred fifteen thousand, six hundred eighty".