3061221604 has 48 divisors (see below), whose sum is σ = 6396235776. Its totient is φ = 1254304800.

The previous prime is 3061221517. The next prime is 3061221607. The reversal of 3061221604 is 4061221603.

3061221604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3061221607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50799 + ... + 93289.

It is an arithmetic number, because the mean of its divisors is an integer number (133254912).

Almost surely, 2^3061221604 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 3061221604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3198117888).

3061221604 is an abundant number, since it is smaller than the sum of its proper divisors (3335014172).

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

3061221604 is a wasteful number, since it uses less digits than its factorization.

3061221604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42616 (or 42614 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 3061221604 is about 55328.3074384171. The cubic root of 3061221604 is about 1451.9943391877.

Subtracting 3061221604 from its reverse (4061221603), we obtain a palindrome (999999999).

The spelling of 3061221604 in words is "three billion, sixty-one million, two hundred twenty-one thousand, six hundred four".